example of pseudo-random number generator.

1 files changed, 20 insertions, 0 deletions

diff --git a/rand_example.c b/rand_example.c
new file mode 100644
index 0000000..794c754
--- /dev/null
+++ b/rand_example.c
@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+int main(int argc, const char *argv[])
+{
+  int i;
+  printf("RAND_MAX is %u\n", RAND_MAX);
+  srand(time(0));
+
+  printf("random values from 0 to RAND_MAX\n");
+  for (i = 0; i < 8; i++) {
+    printf("%d\n", rand());
+  }
+  printf("random values from 1 to 20\n");
+  for (i = 0; i < 8; i++) {
+    printf("%d\n", (rand()%20) + 1);
+  }
+  return 0;
+}