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  1. #include <stdio.h>
  2.  
  3. int sum(int n) {
  4.     int i;
  5.     int c = 0;
  6.  
  7.     for (i = 1; i <= n; i++) {
  8.         c += i;
  9.     }
  10.  
  11.     return c;
  12. }
  13.  
  14. int main(void) {
  15.     int a, b;
  16.     a = 10;
  17.     b = sum(a);
  18.  
  19.     printf("1から%dまでの和は%d\n", a, b);
  20.  
  21.     return 0;
  22. }
  23.  
Success #stdin #stdout 0s 5320KB
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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/KfoNcl
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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