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  1. #include <stdio.h>
  2. /* 函数功能：用迭代法计算n! */
  3. long Fact(int n)
  4. {            /* 函数定义 */
  5.     int  i;
  6.     long result = 1;
  7.     for (i = 2; i <= n; i++) {
  8.         result = result * i;
  9.     }
  10.     return result;
  11. }
  12. int main(void) 
  13. {
  14.     int  m;
  15.     long ret;
  16.     printf("Input m:");
  17.     scanf("%d", &m);
  18.     ret = Fact(m);
  19.     printf("%d! = %ld\n", m, ret);
  20.     return 0;
  21. }
Success #stdin #stdout 0s 5348KB
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stdin
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6
stdout
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Input m:6! = 720
https://ideone.com/yfDSJj
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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