Initial Commit - days 01-12

2020-12-21 14:58:15 +01:00
commit 11844d1904
131 changed files with 16060 additions and 0 deletions
--- a/day01/ex1-c.c
+++ b/day01/ex1-c.c
@@ -0,0 +1,29 @@
+/* ex1-c:c: Advent2020 game, day 1/game 1
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(ac, av)
+char **av;
+{
+     int numbers[1000];         /* should do differently :
+                                 * either read twice, either create list
+                                 */
+     int n=0, i, j, n1, n2;
+
+     while (scanf("%d", numbers+n) != EOF)
+          n++;
+
+     for (i=0; i<n; ++i) {
+          n1=numbers[i];
+          for (j=i+1; j<n; ++j) {
+               n2=numbers[j];
+               if (n1+n2 == 2020) {
+                    printf("%s : %d:%d %d:%d sum=%d mul=%d\n", *av,
+                           i, n1, j, n2, n1+n2, n1*n2);
+                    exit (0);
+               }
+          }
+     }
+}