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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int a,i,sum=0;
  5. scanf("%d",&a);
  6. for(i=1;i<=a;i++){
  7. 	sum+=i;
  8. }
  9. printf("%d",sum);
  10. 	return 0;
  11. }
  12.  
Success #stdin #stdout 0s 5320KB
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stdout
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https://ideone.com/GITVze
language:
C99 (gcc 8.3)
created:
4 days ago
visibility:
public

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