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  1. #include <stdio.h>
  2. int sum (int n)
  3. 	{if (n==0)
  4. 	return 0;
  5. 	else
  6. 	return  n+sum(n-1);
  7. }
  8. int main(void) {
  9. 	int n ;
  10. 	printf("enter a number:" );
  11. 	scanf("%d",&n);
  12. 	printf("sum 0 to %d is :%d\n",n,sum(n));
  13.  
  14. 	return 0;
  15. }
  16.  
Success #stdin #stdout 0s 5284KB
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stdin
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Standard input is empty
stdout
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enter a number:sum 0 to 32764 is :536756230
https://ideone.com/Sm4wUV
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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