hw

.gitignore

@@ -1,11 +1,7 @@
-.DS_Store
+# Created by https://www.toptal.com/developers/gitignore/api/node,vscode,emacs,c
-.idea
+# Edit at https://www.toptal.com/developers/gitignore?templates=node,vscode,emacs,c
-*.log
-tmp/
-
-*.class
-build
 
+### C ###
 # Prerequisites
 *.d
 
@@ -59,5 +55,197 @@ Module.symvers
 Mkfile.old
 dkms.conf
 
-# debug information files
+### Emacs ###
-*.dwo
+# -*- mode: gitignore; -*-
+*~
+\#*\#
+/.emacs.desktop
+/.emacs.desktop.lock
+*.elc
+auto-save-list
+tramp
+.\#*
+
+# Org-mode
+.org-id-locations
+*_archive
+
+# flymake-mode
+*_flymake.*
+
+# eshell files
+/eshell/history
+/eshell/lastdir
+
+# elpa packages
+/elpa/
+
+# reftex files
+*.rel
+
+# AUCTeX auto folder
+/auto/
+
+# cask packages
+.cask/
+dist/
+
+# Flycheck
+flycheck_*.el
+
+# server auth directory
+/server/
+
+# projectiles files
+.projectile
+
+# directory configuration
+.dir-locals.el
+
+# network security
+/network-security.data
+
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+.temp
+
+# Docusaurus cache and generated files
+.docusaurus
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+
+### Node Patch ###
+# Serverless Webpack directories
+.webpack/
+
+# Optional stylelint cache
+
+# SvelteKit build / generate output
+.svelte-kit
+
+#!! 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

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

@@ -0,0 +1,18 @@
+#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/numberreversal.c

@@ -0,0 +1,24 @@
+#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/timeconverter.c

@@ -0,0 +1,30 @@
+#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;
+}