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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int i=1, sum=0,n;
  5.  
  6. 	scanf ("%d",&n);
  7. 	do{
  8. 		sum = sum+i;
  9. 		i = i+1;
  10. 	}while(i<=n);
  11. 	printf("合計:%d",sum);
  12. 	return 0;
  13. }
  14.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin 
15
stdout 
合計:120
https://ideone.com/9zGkqC
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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