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  1. #include <stdio.h>
  2. int main(void)
  3. {
  4.     int  i, n, sum;
  5.     printf("Input n:");
  6.     scanf("%d", &n);
  7.     sum = 0;                     /* 累加和变量初始化为0 */
  8.     for (i = 1;i<=n;i++)
  9.     {
  10.     	sum = sum +i;
  11.     }
  12.     printf("sum = %d\n", sum);
  13.     return 0;
  14. }
Success #stdin #stdout 0.01s 5276KB
comments (?)
stdin 
100
stdout 
Input n:sum = 5050
https://ideone.com/AzM6tp
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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