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  1. #include <stdio.h>
  2. int sum1(int n){
  3. 	int i,sum=0;
  4. 	for(i=1;i<=n;i++){
  5. 		sum=sum+i;
  6. 	}
  7. 	return sum;
  8. }
  9. int main(void) {
  10. 	int a;
  11. 	for(a=1;a<11;a++){
  12. 		printf("sum1(%d)=%d\n",a,sum1(a));
  13. 	}
  14. 	return 0;
  15. }
  16.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin 
Standard input is empty
stdout 
sum1(1)=1
sum1(2)=3
sum1(3)=6
sum1(4)=10
sum1(5)=15
sum1(6)=21
sum1(7)=28
sum1(8)=36
sum1(9)=45
sum1(10)=55
https://ideone.com/Df7Ja6
2Q-1 02-0
language:
C99 (gcc 8.3)
created:
1 day ago
visibility:
public

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