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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.     i = 1;
  9.     while (i <= n)
  10.     {
  11.         sum = sum + i;          /* 做累加运算 */
  12.         i++;    /* 累加计数器加1 */
  13.     }
  14.     printf("sum = %d\n", sum);
  15.     return 0;
  16. }
  17.  
Success #stdin #stdout 0s 5284KB
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stdin
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100
stdout
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Input n:sum = 5050
https://ideone.com/hlHguP
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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