Loop and recursive write factorial

/ * 
   Cycle write factorial 

* /

 4 
 5 #include<stdio.h>
 6 int main()
 7 {
 8     int sum = 1;
 9     int i;
10     for (i = 1; i < 100;i++)
11     {
12         sum *= i;
13     }
14     printf("%d", sum);
15 
16 
17     return 0;
18 }

1  / * 
2    Recursive write factorial
 3  * / 
4  
5 #include <stdio.h>
 6  int mult ( int num)
 7  {
 8      if (num == 1 )
 9      {
 10          return  1 ;
 11      }
 12      return num * mult ( num- 1 );
 13  
14  }
 15  int main ()
 16  {
 17      int sum;
 18      sum = mult ( 10 );
 19     printf("%d", sum);
20 
21 
22     return 0;
23 }