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  1. #include <stdio.h>
  2.  
  3. void sum(int n,int s){
  4.        if(n==0){
  5.           printf("%d",s);
  6.           return;
  7.        } 
  8.           sum(n-1,s+n);
  9.          return;
  10. }
  11.  
  12. int main() {
  13.       int n;
  14.       printf("Enter the value of n: \n");
  15.       scanf("%d",&n);
  16.       sum(n,0);
  17.  
  18.  
  19. 	return 0;
  20. }
  21.  
Success #stdin #stdout 0.01s 5316KB
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stdin
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5
stdout
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Enter the value of n: 
15
https://ideone.com/5f0ht5
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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