循环和递归写阶乘

Posted 2021-03-01 old-horse

/*
   循环写阶乘

*/

 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   递归写阶乘
 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 }