Add a Factorial Algorithm

fat.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+int fat(int number){
+	if (number == 1) 
+		return 1;
+	else 
+		return number*fat(number-1);
+}
+
+int main(){
+	int number;
+
+	//Asks the factorial of the number n 
+	printf("Number: ");
+	scanf("%d", &number);
+	
+	printf("%d\n", fat(number));
+	
+	return 0;
+}