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-rw-r--r--mat/advent/4/prog.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/mat/advent/4/prog.c b/mat/advent/4/prog.c
new file mode 100644
index 0000000..a50524f
--- /dev/null
+++ b/mat/advent/4/prog.c
@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <stdlib.h>
+int main (int argc, char ** argv) {
+ if (argc != 1+1) {
+ fprintf(stderr, "uporaba: %s <dolzina stranice kvadratne mreze>\nprimer za šahovnico: %s 8\n", argv[0], argv[0]);
+ return 1;
+ }
+ unsigned long int n = strtol(argv[1], NULL, 10);
+ unsigned long int x = 1;
+ unsigned long int y = 1;
+ unsigned long int s = 0;
+ for (x = 1; x <= n; x++)
+ for (y = 1; y <= n; y++)
+ s = s + x * y;
+ fprintf(stdout, "seštevek možnih pravokotnikov v mreži %lux%lu je %lu\n", n, n, s);
+}