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  1. #include <stdio.h>
  2.  
  3. int sum(int n){
  4.     int t = 0;
  5.  
  6.     for(int i = 1; i <= n; i++){
  7.         t += i;
  8.     }
  9.  
  10.     return t;
  11. }
  12.  
  13. int main(void) {
  14.     int a, b;
  15.  
  16.     a = 10;
  17.     b = sum(a);
  18.  
  19.     printf("1から%dまでの和は%d", a, b);
  20.  
  21.     return 0;
  22. }
Success #stdin #stdout 0s 5308KB
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Standard input is empty
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1から10までの和は55
https://ideone.com/np6kfI
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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