Factorial using Recursion

main.c

@@ -0,0 +1,21 @@
+#include <stdio.h>
+int rec(int n)
+{
+  if(n==0)
+    return 1;
+  else
+    return n*rec(n-1);
+
+}
+int main(void) 
+{
+  int n;
+  printf("Enter number:\n");
+
+  scanf("%d",&n);
+
+  int a=rec(n);
+  printf("%d\n",a);
+  return 0;
+
+}