Run time error!

#1

please check my code and marked out my mistake.

#2

your approach is completely incorrect

if(i==n && sum==0)
	{
	cout<<"yes";
	return;
	}

this condition holds true only if i is n ans sum is 0
otherwise it stuck into infinite recursive calls

check out the code below
if you have any further doubts feel free to ask

Reference Code

#3

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