Update main.c

Author: BaseMax

main.c

@@ -1,6 +1,15 @@
 #include <stdio.h>
 
+int factorial(int n) {
+    if (n == 0) return 1;
+    return n * factorial(n - 1);
+}
+
 int main() {
     printf("Hello, GitHub Actions!\n");
+
+    int num = 5;
+    printf("Factorial of %d is %d\n", num, factorial(num));
+    
     return 0;
 }