Create function_factorial.c

mriganksingh/function_factorial.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+int factorial(int n)
+{
+    if (n == 0 || n == 1) 
+    {
+        return 1;
+    } 
+    else 
+    {
+        return n * factorial(n - 1);
+    }
+}
+int main() 
+{
+    int num;
+    printf("Enter a number to find its factorial: ");
+    scanf("%d", &num);
+    if (num < 0) 
+    {
+        printf("Factorial is not defined for negative numbers.\n");
+    }
+    else 
+    {
+        printf("Factorial of %d is %d\n", num, factorial(num));
+    }
+    return 0;
+}