changed structure

.gitignore

@@ -119,6 +119,8 @@ lerna-debug.log*
 # Diagnostic reports (https://nodejs.org/api/report.html)
 report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
 
+build
+
 # Runtime data
 pids
 *.pid
@@ -246,6 +248,75 @@ dist
 # SvelteKit build / generate output
 .svelte-kit
 
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Linker files
+*.ilk
+
+# Debugger Files
+*.pdb
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+*.so.*
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+# Build directories
+build/
+Build/
+build-*/
+
+# CMake generated files
+CMakeFiles/
+CMakeCache.txt
+cmake_install.cmake
+Makefile
+install_manifest.txt
+compile_commands.json
+
+# Temporary files
+*.tmp
+*.log
+*.bak
+*.swp
+
+# vcpkg
+vcpkg_installed/
+
+# debug information files
+*.dwo
+
+# test output & cache
+Testing/
+.cache/
+
 #!! ERROR: vscode is undefined. Use list command to see defined gitignore types !!#
 
 # End of https://www.toptal.com/developers/gitignore/api/node,vscode,emacs,c

c/allocstrings.c

@@ -0,0 +1,44 @@
+/*
+  een programma dat newlines leest en ze dan weer print
+
+  we gaan een scanf moeten maken die newlines leest en dan malloced voor elke
+string
+
+scanf lijkt automatisch te stoppen op newlines, maar gaat wel onmiddelijk door totdat alle scanf's satisfied zijn 
+
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define WORDCOUNT 5
+
+void storeinput(char input[], int index, char **strarr) {
+  char *myword = malloc(strlen(input) +1);
+  //*myword = *input; //blijkbaar hier strcpy voor nodig, want anders overwrite
+  //ik hier alleen maar de value van de pointer zelf
+  strcpy(myword, input); //myword is a pointer to allocated memory, but it's empty unless strcopy  
+  printf("myword:%s\n", myword);
+  strarr[index] = myword;
+  printf("strarr:%s\n", strarr[index]);  
+}
+
+int main() {
+  // laten we eerst een array van pointers naar strings maken
+  char **strarr = malloc(sizeof(char *) * 10);
+
+  // moeten nu een functie maken die individuele strings malloced?
+
+  for (int i = 0; i < WORDCOUNT; i++) {
+    char temp[50];
+    scanf("%s", temp);
+    storeinput(temp, i, strarr);
+    printf("wordin:%d %s\n", i, temp);
+  }
+
+  for (int i = 0; i < WORDCOUNT; i++) {
+	printf("word:%d, %s\n", i, strarr[i]);
+  }
+  return 0;
+}

c/bits/converter/converter.c

@@ -0,0 +1,47 @@
+#include <stdio.h>
+#include <string.h>
+
+/*
+  take input
+  decide if hex or binary
+  then convert
+  then print
+
+  let's convert binary to hex first
+  for each byte, split into nibble,
+
+*/
+
+
+//might have to add some padding, but basic works
+void bintohex(char* string_in){
+  const char hexmap[] = "0123456789ABCDEF";
+  char hexnum[4] = {};
+  int stringl = strnlen(string_in, 10)-1;
+  //aantal nibbles
+  int loopamount = stringl/4;
+  printf("totalstringlength=%d\n", stringl);
+  for (int loopcount = 0; loopcount < loopamount; loopcount++) {
+	int bin2dec = 0;
+	//rechts naar links in nibble
+	for (int nibbledigit = 0 ; nibbledigit <4 ; nibbledigit++) {
+	  //nibblecount + current
+	  int targetdigit = loopcount*4+(4-1-nibbledigit);
+	  //check if j+i = 1
+	  //printf("nibbledigit:%d=%c=%i\n", j, string_in[targetdigit],1<<j);
+	  bin2dec += 1 * (string_in[targetdigit]-'0')*1<<(nibbledigit);
+	}
+	hexnum[loopcount]=hexmap[bin2dec];
+	printf("nibble:%i=%d\n",loopcount,bin2dec);
+  }
+  printf("hex=%s", hexnum);
+}
+
+int main(){
+  printf("input either binary or hexadecimal\n");
+  char buff[32+2]; //4bytes+\n+null
+  fgets(buff, sizeof(buff), stdin);
+  bintohex(buff);
+}
+
+

c/files/parser/kvparser/hash_fnv.h

@@ -0,0 +1,7 @@
+#ifndef HASH_FNV_H
+#define HASH_FNV_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+uint32_t hasher(void *data, size_t len);

c/files/parser/kvparser/kvparser.c

@@ -0,0 +1,27 @@
+#include "stringchicken.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char* argv[]) {
+  char myString[100];
+  char ch;
+  FILE *fptr = fopen(argv[1], "r");
+
+  if (fptr == NULL) {
+	printf("file doesn't exist");
+	exit(1);
+  }
+
+  struct stringchicken *mystringarray = create_string_chicken();
+  
+  while (fgets(myString, 100, fptr)) {
+	push_SC(myString,  mystringarray);
+  }
+
+  print_SC(mystringarray);
+  int mylength = strnlen(myString, 100);
+  
+  fclose(fptr);
+}

c/files/parser/kvparser/kvtest.txt

@@ -0,0 +1,2 @@
+dit is een test
+test2

c/files/parser/kvparser/stringchicken.c

@@ -0,0 +1,60 @@
+#include "stringchicken.h"
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/*
+  parser that can read K=V, maybe also K:V? although would just be configurable seperator
+  I know python uses dictionary which uses a hash table so key -> hash -> value table
+  for this assignment, I could use 2 arrays? though that's... a bit dangerous? or at least tricky, in terms of reassignments.
+  let's just go with a struct with 2 dynamic arrays where the indices are aligned
+
+ik neem dus eerst 1 die het omzet naar een struct van strings, dan een struct van de KV values.
+ */
+
+struct stringchicken *create_string_chicken(){
+  struct stringchicken *mystruct = malloc(sizeof(struct stringchicken));
+  mystruct->length = 0;
+  mystruct->capacity = 2;
+
+  mystruct->data = malloc(sizeof(char*) * mystruct->capacity);
+
+  return mystruct;
+}
+
+void push_SC(char *string_input, struct stringchicken *struct_input){
+  if (struct_input->length == struct_input->capacity) {
+	struct_input->capacity*=2;
+	char **tempptr = realloc(struct_input->data, sizeof(char*) * struct_input->capacity);
+
+	if (tempptr == NULL) {
+	  exit(1);
+	}
+
+	struct_input->data = tempptr;
+  }
+  
+  char *newstring = malloc(strnlen(string_input, 101)+1);
+  strcpy(newstring,string_input);
+  struct_input->data[struct_input->length] = newstring;
+
+  struct_input->length++;
+}
+
+void free_SC(struct stringchicken *struct_input){
+  for (int i = 0; i < struct_input->length; i++) {
+	free(struct_input->data[i]);
+  }
+  free(struct_input->data);
+  free(struct_input);
+}
+
+
+
+void print_SC(struct stringchicken *input_struct){
+  for (size_t i = 0; i < input_struct->length; i++) {
+	printf("line:%zu equals %s", i, input_struct->data[i]);
+  }
+}

c/files/parser/kvparser/stringchicken.h

@@ -0,0 +1,17 @@
+#ifndef STRINGCHICKEN_H
+#define STRINGCHICKEN_H
+
+#include <stddef.h>
+
+struct stringchicken{
+  char **data;
+  size_t length;
+  size_t capacity;
+};
+
+struct stringchicken *create_string_chicken(void);
+void push_SC(char *string_input, struct stringchicken *struct_input);
+void print_SC(struct stringchicken *input_struct);
+
+#endif // STRINGCHICKEN_H
+    

c/gai/fixedynarr.c

@@ -0,0 +1,100 @@
+#include <stdio.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+/*
+  todo
+  change intarray into str array
+  make push array malloc for new str
+  make input strings instead of int (should use fgets?)
+*/
+
+struct StringArray{
+  char **data;
+  size_t length;
+  size_t capacity;
+};
+
+void print_SA(struct StringArray *in_str) {
+  for (size_t i = 0; i < in_str->length; i++) {
+	printf("word:%zu = %s\n", i, in_str->data[i]);
+  }
+}
+
+struct StringArray *SA_create(size_t in_capacity) {
+  struct StringArray *mystr = malloc(sizeof(struct StringArray));	//allocate memory for struct
+
+  mystr->data = malloc(sizeof(char*) * in_capacity);					//make sure the pointer in the struct points to the array
+  mystr->length = 0;												//forgot to actually assign a value to the struct
+  mystr->capacity = in_capacity;
+  
+  if (mystr->data == NULL) {
+	exit(1);
+  }
+
+  return mystr;
+}
+
+int get_string_len(char *in_string){
+  int length = 0;
+  char currchar;
+  do {
+	currchar = in_string[length];
+	length++;
+  }
+  while (currchar != '\0');
+
+  printf("length of word: %d\n", length); //for some reason length is always 2 more than expected, so 1 more than necessary? apparently because of \n, not sure how to filter that.
+  return length;
+}
+
+
+/* push value to struct, also handle realloc */
+void SA_push(char *in_string, struct StringArray *in_str){
+  if (in_str->length == in_str->capacity) {						//check if already full
+    in_str->capacity*=2;										//if so we should double
+	printf("array capacity is now:%zu\n", in_str->capacity);
+	char **temp;													//create a temporary pointer 
+    temp = realloc(in_str->data, sizeof(char*)*in_str->capacity); //realloc the data into a new bucket
+	if(temp == NULL){exit(0);};									//check if actually valid
+	in_str->data = temp;										//if valid, make sure the pointer in the struct points to the realloced block
+  }
+  
+  char *newword = malloc(sizeof(char) * get_string_len(in_string)); //allocate memory for new string, apparantly my function already includes the length of null term
+  strcpy(newword, in_string); //copy word into memory
+  in_str->data[in_str->length] = newword;
+  printf("word:%zu = %s\n", in_str->length, in_str->data[in_str->length]);
+  in_str->length++; //didn't read the flow when transferring and accidentally put this in the if block
+  printf("array length is now:%zu\n", in_str->length);
+  //also had an off-by-one error because I increased length before doing anything
+}
+
+
+void SA_free(struct StringArray *inp_str) {
+  for (size_t i = 0; i < inp_str->length; i++) { //for each pointer in array
+	free(inp_str->data[i]); //free at pointer 
+  }
+  free(inp_str->data); //free pointer to pointers
+  free(inp_str); //free the struct
+}
+
+int main() {
+  srand(time(NULL));
+  printf("input words:\n");
+
+  struct StringArray *mystringarraystr = SA_create(2);
+
+  char input[50];
+  do{ 
+	fgets(input, sizeof(input), stdin); //get input from stdin of size input[] and put it in input
+	SA_push(input, mystringarraystr); //push the value of input into mystr
+  } while (*input != '-');
+
+  print_SA(mystringarraystr);
+
+  SA_free(mystringarraystr);
+
+  return 0;
+}

c/ui/ncurses/hc.c

@@ -0,0 +1,38 @@
+#include <ncurses.h>
+#include <stdio.h>
+
+
+
+int main(){
+  initscr();
+  noecho();
+  cbreak();
+  keypad(stdscr, TRUE);
+  curs_set(1);
+
+  if(has_colors() == FALSE ) {
+	endwin();
+	puts("no colors");
+	return 1;
+  }
+
+  start_color();
+  init_pair(1, COLOR_WHITE, COLOR_BLUE);
+  attron(COLOR_PAIR(1));
+
+  int y,x;
+  getmaxyx(stdscr, y,x);
+  y=y*0.5;
+  x=(x*0.5) -6;
+  mvwprintw(stdscr, y, x, "Hello World");
+  mvwprintw(stdscr, 2, 2, "Hellow World1");
+  refresh();
+
+  attroff(COLOR_PAIR(1));
+
+  getch();
+
+  endwin();
+  
+  return 0;
+}

cpp/functions/cmake/CMakeLists.txt

@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.24)
+project(cppout)
+
+file(GLOB SOURCE_FILES "*.cpp")
+
+add_executable(${PROJECT_NAME} ${SOURCE_FILES})

cpp/functions/cmake/hello.cpp

@@ -0,0 +1,4 @@
+#include <cstdio>
+void printhello(const char *name) {
+  printf("hello %s \n", name);
+  }

cpp/functions/cmake/hello.h

@@ -0,0 +1 @@
+void printhello(const char *name);

cpp/functions/cmake/main.cpp

@@ -0,0 +1,7 @@
+#include <cstdlib>
+#include "hello.h"
+int main() {
+  printhello("test");
+  
+  return EXIT_SUCCESS;
+}

cpp/functions/hw/main.cpp

@@ -0,0 +1,6 @@
+#include <iostream>
+
+int main() {
+  std::cout << "Hello, world";
+  return 0;
+}

cpp/functions/sort/CMakeLists.txt

@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.24)
+project(cppout)
+
+file(GLOB SOURCE_FILES "*.cpp")
+
+add_executable(${PROJECT_NAME} ${SOURCE_FILES})

cpp/functions/sort/sort.cpp

@@ -0,0 +1,47 @@
+#include <cstddef>
+#include <cstdio>
+#include <cstdlib>
+#include <vector>
+
+void bsort(std::vector<int> &input_vec){
+  /*
+    voor elk nummer i in k behalve de laatste
+    ga langs elk volgende nummer j behalve de laatste
+        en kijk of i+1 groter is dan i, als i groter is dan j, verplaats i naar
+j
+   */
+
+  for (size_t i = 0; i < input_vec.size(); i++) {
+    printf("%zu\n", i);
+    for (size_t j = 0; j < input_vec.size()-1-i; j++) {
+      if (input_vec[j]>input_vec[j+1]) {
+        int temp = input_vec[j + 1];
+        input_vec[j + 1] = input_vec[j];
+        input_vec[j] = temp;
+	  }
+	}
+  }
+}
+
+// returns an array of length filled with random positive integers of up to max
+std::vector<int> createranarr(size_t input_length, size_t max){
+  std::vector<int> myv;
+  for (size_t i = 0; i < input_length; i++) {
+	myv.push_back(rand() % max);
+  }
+  return myv;
+}
+
+void arrprinter(const std::vector<int> &input_vec) {
+  for (size_t i = 0; i < input_vec.size(); i++) {
+	std::printf("number:%zu = %d\n",i, input_vec[i]);
+  }
+}
+
+int main() {
+  std::vector<int> myvector = createranarr(10, 100);
+  arrprinter(myvector);
+  bsort(myvector);
+  arrprinter(myvector);
+  return 0;
+}

cpp/ui/ncurses/hw/CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.24)
+project(cppout)
+
+file(GLOB SOURCE_FILES "*.cpp")
+
+find_package(Curses REQUIRED)
+include_directories(${CURSES_INCLUDE_DIR})
+
+add_executable(${PROJECT_NAME} ${SOURCE_FILES})
+target_link_libraries(${PROJECT_NAME} ${CURSES_LIBRARIES})

cpp/ui/ncurses/hw/hwcurses.cpp

@@ -0,0 +1,12 @@
+#include <ncurses.h>
+
+int main() {
+  initscr();
+  move(11, 26);
+  printw("Hello curses");
+  refresh();
+  getch();
+  endwin();
+
+  return 0;
+}

med/C-programming-a-modern-standard/5-2-4_number_comparison.c

@@ -1,18 +0,0 @@
-#include "stdio.h"
-
-int main()
-{
-    int i = 5;
-    int j = 7;
-    int x;
-
-    x = (i>j)-(j>i);
-    /*
-     *  -1 if i less than j
-     *  0 if i equal to j
-     *  +1 if i more than j
-     *  */
-
-    printf("%d: ", x);
-    return 0;
-}

med/C-programming-a-modern-standard/digitseen.c

@@ -1,94 +0,0 @@
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-void numberprinter(int inarr[], int arrlength) {
-  for (int i = 0; i < arrlength; i++) {
-    printf("number%d: %d\n", i, inarr[i]);
-  }
-}
-
-struct Darray {
-  int *digits;
-  size_t length; // blijkbaar correcte eenheid voor length, malloc stuff ofzo (instead of hardcoding it)
-};
-
-struct Darray *numbertodigitDarr(int input) {
-
-  // same calculation for arrsize
-  int op = 0;
-  int tempinput = input;
-  while (tempinput) {
-    tempinput /= 10;
-    op++;
-  }
-
-  // allocate memory for struct and array, apparently more ideomatic to have a single malloc
-  struct Darray *DigDarr =
-    malloc(op * sizeof(int) + sizeof(*DigDarr) + sizeof(int));
-  if (DigDarr == NULL) {
-    printf("allocation failed");
-    exit(0);
-  }
-  // forgot to assign a value to the pointer variable in the struct.
-  DigDarr->digits = (int *)(DigDarr + 1);
-  DigDarr->length = op;
-
-  // insert numbers into array in reverse order
-  for (int i = op - 1; i >= 0; i--) {
-    int last_digit = input % 10;
-    printf("last digit: %d\n", last_digit);
-    DigDarr->digits[i] = last_digit;
-    input /= 10;
-  }
-
-  return DigDarr;
-}
-
-//
-void checkarrdupes(struct Darray input) {
-  for (int i = 0; i < input.length; i++) {
-    printf("digitstr: %d\n", input.digits[i]);
-  }
-
-  int digit_seen[10] = {};
-
-  // kijk door elke arr element
-  for (int i = 0; i < input.length; i++) {
-    // kijk of input[i] al in digit_seen zit
-    if (digit_seen[input.digits[i]]) {
-      printf("duplicate number: %d\n", input.digits[i]);
-    } else {
-      digit_seen[input.digits[i]] = 1;
-    }
-  }
-}
-
-int main(void) {
-
-  int n;
-
-  printf("enter a number: ");
-  // TODO: scanf is fragile. Try using fgets() and strtol() for robust input
-  // sanitization.
-  scanf("%d", &n);
-  int digitslength = 0;
-  struct Darray *mydigitsDarr = numbertodigitDarr(n);
-
-  checkarrdupes(*mydigitsDarr);
-
-  free(mydigitsDarr);
-  return 0;
-}
-/*
-  somehow I have to find a way to get the number of digits in my number
-  for now, we use modulo. whatever remains is the last digit of the number
-  we then divide by 10 to remove the last number
-
-we can keep a counter, and we can put it into an array. however, if we use the
-iterator (which has to start from 0, because we don't know the size of the
-number?) then our number will be the wrong way around.
-
-malloc, blijkbaar very different
- */

med/C-programming-a-modern-standard/dweight.c

@@ -1,20 +0,0 @@
-#include "stdlib.h"
-#include "stdio.h"
-
-int main(void)
-{
-    float height, length, width, volume, weight;
-    printf("Enter height of box: ");
-    scanf("%f", &height);
-    printf("Enter length of box: ");
-    scanf("%f", &length);
-    printf("Enter width of box: ");
-    scanf("%f", &width);
-
-    volume = height * length * width;
-    weight = (volume + 165) / 166;
-
-    printf("Dimensions: %fx%fx%f\n", length, width, height);
-    printf("Volume: %f\n", volume);
-    printf("Weight: %f\n", weight);
-}

med/C-programming-a-modern-standard/numberreversal.c

@@ -1,24 +0,0 @@
-#include "stdio.h"
-#include "stdlib.h"
-
-int main(){
-
-    int input;
-    printf("input:");
-    scanf("%d", &input);
-
-    // assume 3 digits,
-
-    int d1, d2, d3;
-    d1 = input / 100; //uitgaande van flooring
-    d2 = input % 100 / 10;
-    d3 = input % 10;
-
-    printf("%d%d%d",d3, d2,d1);
-
-    printf("next: ");
-    scanf("%1d%1d%1d", &d1,&d2,&d3);
-    printf("%d%d%d",d3,d2,d1);
-
-    return 0;
-}

med/C-programming-a-modern-standard/pun.c

@@ -1,7 +0,0 @@
-#include "stdio.h"
-
-int main(void)
-{
-    printf("To C, or not to C: that is the question.\n");
-    return 0;
-}

med/C-programming-a-modern-standard/timeconverter.c

@@ -1,30 +0,0 @@
-#include "stdio.h"
-
-int main()
-{
-
-    /*
-     *  modify 24 hour time to 12 hour
-     *  take first 2 numbers,
-     *  if numbers <=12, AM
-     *  else PM
-     *  */
-
-    int i ; int j; char c;
-    printf("input time: ");
-    scanf("%2d%1c%2d", &i,&c, &j);
-    printf("int i: %d int j: %d\n", i, j);
-
-    if(i!=12&&j==00){
-        i%=12;
-    }
-
-
-    if(i <=12){
-        printf("%d:%.2d AM",i,j);
-    } else {
-        printf("%d:%.2d PM",i,j);
-    }
-
-    return 0;
-}

qscr/c/gai/fixedynarr.c

@@ -1,74 +0,0 @@
-
-#include <stdio.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <time.h>
-struct IntArrayStr{
-  int *data;
-  size_t length;
-  size_t capacity;
-};
-
-void read_int_array_str(struct IntArrayStr *in_str) {
-  printf("inputlength:%zu\n", in_str->length);
-  for (size_t i = 0; i < in_str->length; i++) {
-	printf("digit:%zu = %d\n", i, in_str->data[i]);
-  }
-}
-
-struct IntArrayStr *create_int_array_str(size_t in_capacity) {
-  struct IntArrayStr *mystr = malloc(sizeof(struct IntArrayStr)); /* allocate memory for struct */
-
-  mystr->data = malloc(sizeof(int) * in_capacity); 	/* make sure the pointer in the struct points to the array */
-  mystr->length = 0;  //forgot to actually assign a value to the struct
-  mystr->capacity = in_capacity;
-  
-  if (mystr->data == NULL) {
-	exit(0);
-  }
-
-  return mystr;
-}
-
-void push_int_array_str(int in_int, struct IntArrayStr *in_str){
-  if (in_str->length == in_str->capacity) {
-    in_str->capacity*=2;
-	printf("intarray capacity is now:%zu\n", in_str->capacity);
-	int *temp;
-    temp = realloc(in_str->data, sizeof(int)*in_str->capacity);
-	if(temp == NULL){exit(0);};
-	in_str->data = temp;
-	printf("intarray length is now:%zu\n", in_str->length);
-  }
-  in_str->data[in_str->length] = in_int;
-  printf("number:%zu = %d\n", in_str->length, in_str->data[in_str->length]);
-  in_str->length++; //didn't read the flow when transfering and accidentally put this in the if block
-  //also had an off-by-one error because I increased length before doing anything
-}
-
-int main() {
-  srand(time(NULL));
-  // change to while loop and take inputs rather than fill with random numbers
-  printf("input numbers:\n");
-
-  //int input;
-  size_t length = 10;
-  /* while (input != -1) { */
-  /* 	scanf("%d", &input); */
-  /* 	length++; */
-  /* } */
-
-  struct IntArrayStr *myintarraystr = create_int_array_str(2);
-
-  for (size_t i = 0; i < length; i++) {
-	int input = rand() % 10;
-    push_int_array_str(input, myintarraystr);
-  }
-
-  read_int_array_str(myintarraystr);
-
-  free(myintarraystr->data);
-  free(myintarraystr);
-
-  return 0;
-}

qscr/c/learnc/aptr.c

@@ -1,39 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main() {
-    int i, j;
-    /* TODO: define the 2D pointer variable here */
-    int ** pnumbers;
-
-    /* TODO: complete the following line to allocate memory for holding three rows */
-    pnumbers = (int **) malloc(sizeof(int)*6);
-
-    /* TODO: allocate memory for storing the individual elements in a row */
-    pnumbers[0] = (int *) malloc(1 * sizeof(int));
-    pnumbers[1] = (int *) malloc(2 * sizeof(int));
-    pnumbers[2] = (int *) malloc(3 * sizeof(int));
-
-    pnumbers[0][0] = 1;
-    pnumbers[1][0] = 1;
-    pnumbers[1][1] = 1;
-    pnumbers[2][0] = 1;
-    pnumbers[2][1] = 2;
-    pnumbers[2][2] = 1;
-
-    for (i = 0; i < 3; i++) {
-        for (j = 0; j <= i; j++) {
-            printf("%d", pnumbers[i][j]);
-        }
-        printf("\n");
-    }
-
-    for (i = 0; i < 3; i++) {
-        /* TODO: free memory allocated for each row */
-        free(pnumbers[i]);
-    }
-
-    /* TODO: free the top-level pointer */
-    free(pnumbers);
-  return 0;
-}

qscr/c/learnc/bsort.c

@@ -1,80 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <time.h>
-
-struct Darray {
-    int size;
-    int data[]; //flexible array member
-};
-
-//randomized array
-void rarr(struct Darray *darr) {
-    for (int i=0; i<darr->size; ++i) {
-        darr->data[i] = rand() % 32;
-    }
-    if (darr == NULL) {
-        printf("failed");
-        exit(1);
-    }
-}
-
-struct Darray *createdarray(int mysize){
-    struct Darray *darrstruct = malloc(mysize * sizeof(int) + sizeof(*darrstruct));
-
-    if (darrstruct == NULL) {
-        printf("failed");
-        exit(1);
-    }
-
-    darrstruct->size = mysize;
-    rarr(darrstruct);
-
-    return darrstruct;
-}
-
-void msort(int *myarr, int mysize) {
-    for (int i = 0 ; i < mysize; i++) {
-        for (int j = 0 ; j < mysize ; j ++)
-            if (myarr[i] > myarr[j]) {
-                int k = myarr[i];
-                myarr[i] = myarr[j];
-                myarr[j] = k;
-            }
-    }
-}
-
-void bsort(struct Darray *myarr) {
-    for (int i = 0; i < myarr->size; i++) {
-        for (int j = 0; j < myarr->size -1 ; j++ ) {
-            if (myarr->data[j] < myarr->data[j+1]) {
-                int k = myarr->data[j];
-                myarr->data[j] = myarr->data[j+1];
-                myarr->data[j+1] = k;
-            }
-        }
-    }
- }
-
-int main() {
-    srand(time(NULL));
-    int mysize = 7;
-    struct Darray *myarray;
-    myarray = createdarray(mysize);
-
-    printf("myarr:\n");
-    for (int i = 0 ; i < myarray->size; i++) {
-        printf("%d\n", myarray->data[i]);
-    }
-
-    bsort(myarray);
-
-    printf("sorted myarr:\n");
-    for (int i = 0 ; i < myarray->size; i++) {
-        printf("%d\n", myarray->data[i]);
-    }
-
-    free(myarray);
-
-    return 0;
-
-}

qscr/c/learnc/linkedlist.c

@@ -1,15 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-struct node {
-    int val;
-    struct node * next;
-};
-
-struct node_t * head = NULL;
-head = (struct node_T*)malloc(sizeof(struct node_t));
-
-int main(){
-
-    return 0;
-}

qscr/c/learnc/pascaltriangle.c

@@ -1,36 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int *pascallarr(int iarrsize, int *ptr){
-    int *mypascallar = malloc(sizeof(int) * iarrsize + 1);
-    /* declare edges, as they're always 1 anyways so we can start the loop at 1 (so i-1 = 0) */
-    mypascallar[0] = 1;
-    mypascallar[iarrsize] = 1;
-    for (int i = 1; i <= iarrsize; i++) {
-        if (i < iarrsize) {
-            mypascallar[i] = ptr[i-1] + ptr[i];
-        }
-    }
-    return mypascallar;
-}
-
-int main() {
-    int trianglesize = 18;
-    int ** pnumbers;
-
-    /* create pascals triangle, on row i, we have i numbers */
-
-    /* should create 2d array of ints, with an array of pointers to arrays*/
-
-    int **ptrtriangle = malloc(sizeof(int *)*trianglesize);
-
-    /* need to create a function that returns the pointer to an array of i numbers filled with numbers */
-    for (int i = 0; i < trianglesize; i++) {
-        ptrtriangle[i] = pascallarr(i,ptrtriangle[i-1]);
-        for (int j = 0; j <= i; j++) {
-            printf("%d|",ptrtriangle[i][j]);
-        }
-        printf("\n");
-    }
-    return 0;
-}

qscr/c/learnc/rec.c

@@ -1,58 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int recfact(int x){
-    int y = 1;
-    if (x==1){
-        return y;
-    } else {
-        return y *= x *recfact(x-1);
-    }
-}
-
-int recfor(int x){
-    int gaga = 1;
-    for (int i = 1; i < x;) {
-        gaga *= i++;
-    }
-    return gaga;
-}
-
-/*
- * i = 1, gaga = 1*2
- * i = 2, gaga = 1*2*3 = 6
- * i = 3, 1*2*3*4 = 24
- *
- * wrong loop time condition
- * wrong calculation
- *
- * ---
- *
- * recursion
- *
- * forgot to assign, forgot a number (multiplied by 0)
- * misunderstood calculation
-
- wel exploren, maar wel naar een doel.
- kijken naar auxililiaries.
- curiosity wss, leren vragen. leren wat ik niet heb, weten wat ik niet weet.
-
- zoektocht heeft wat sturing nodig.
-
- hoe ik mijn probeer stel/vind
- het probleem onderzoeken
-
- limiteer de pogingen
-
-
- hardware / networking
- * *  */
-
-int main () {
-    int i = 6; // we can not handle negative numbers
-
-    printf("%d\n", recfor(i));
-    printf("%d\n", recfact(i));
-
-    return 0;
-}

qscr/c/learnc/rec2.c

@@ -1,46 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-/*
- * factorials
- *
- * in both for loop, as well as recursive
- * factorial: voor int i, vermenigvuldig dan elke i to je bij 1 komt (uit gaande van positive ints)
- *
- * dus, f(3)=3*2*1 = 6 ; f(4)=4*3*2*1=24 ; f(a)=no ; f(-2)= no ; f(2.1) = no
- *
- * will use 2 functions:
- * recfac using recursion
- * itfac using iteration
- *
- * should probably figure out how to test this? maybe a dumb K:V?
- * *  */
-
-int recfact(int input){
-    int fac = 1;
-    if (input==1) {
-        return fac;
-    }
-    else {
-        fac *= input * recfact(input-1);
-    }
-}
-
-int itfact(int input){
-    int sum = 1;
-    for (int i = 1; i <= input; i++) {
-        sum *= i;
-    }
-    return sum;
-}
-
-int main(){
-
-    int input = 5;
-
-    //recfact(input);
-    //itfact(input);
-    printf("%d\n", recfact(input));
-    printf("%d\n", itfact(input));
-    return 0;
-}