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  1.  
  2. #include <stdio.h>
  3. int sum(int n){
  4. 	if(n==0)
  5. 	return 0;
  6. 	else
  7. 	return n + sum(n-1);
  8. }
  9.  
  10. int main(void) {
  11. 	int n;
  12. 	printf("enter a number: ");
  13. 	scanf("%d",&n);
  14. 	printf("sum from 0 to %d is:%d\n",n,sum(n));
  15. 	// your code goes here
  16. 	return 0;
  17. }
  18.  
Success #stdin #stdout 0.01s 5284KB
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stdin
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Standard input is empty
stdout
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enter a number: sum from 0 to 32767 is:536854528
https://ideone.com/O66hEk
language:
C (gcc 8.3)
created:
10 hours ago
visibility:
public

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