factorial

code/factorial/factorial.c

@@ -0,0 +1,28 @@
+#include <stdio.h>
+
+int factorial(int num) {
+  int i;      // $t1
+  int j;      // $t2
+  int temp;   // $t3
+  int sum;    // $t4
+ 
+  temp = 1;
+  sum = 1;
+  i = 1;
+  while (i <= num) {
+    sum = 0;
+    j = 0;
+    while (j < i) {
+      sum += temp;
+      j++;
+    }
+    temp = sum;
+    i++;
+  }
+  return sum;
+}
+
+int main() {
+  printf("fac(%d) = %d\n", 6, factorial(6));
+  return 0;
+}