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  1. #include <iostream>
  2. using namespace std;
  3. // int count=0;
  4. int f(int& sum,int n){
  5. 	if(n==0){
  6. 		// cout<<n<<endl;
  7. 		// n--;
  8. 		return sum;
  9. 	}
  10. 	sum=sum+n;
  11. 	cout<<"sum now is " <<sum<<endl;
  12. 	n--;
  13. 	return f(sum,n);
  14. }
  15. int main() {
  16. 	int num=4;int sum=0;
  17. 	cout<< f(sum,num);
  18. }
Success #stdin #stdout 0s 5320KB
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stdin
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Standard input is empty
stdout
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sum now is 4
sum now is 7
sum now is 9
sum now is 10
10
https://ideone.com/EPTpeb
language:
C++ (gcc 8.3)
created:
10 days ago
visibility:
public

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