hw

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;
+}