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closed as a duplicate of: GATE CSE 2013 | Question: 42

Consider following program

int A(int &a,int b)

{

b=b-1;

if(b==0) return 1;

a=a+1;

return a+A(a,b);

}

Note that first parameter is passed by reference and second by value. What is the return value by A(x,x) where the value of x is 5.

Confusion is that in C there is no order of evaluation of operands of a operator. So here, will the a value is calculated first or is the function called...As per the ans they have used the modified value of a...is there a logic for this resolution of operands...?? 

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