GATE | GATE CS 2013 | Question 42
What is the return value of f(p,p), if the value of p is initialized to 5 before the call? Note that the first parameter is passed by reference, whereas the second parameter is passed by value.
int f(int &x, int c) { c = c - 1; if (c==0) return 1; x = x + 1; return f(x,c) * x; } |
(A) 3024
(B) 6561
(C) 55440
(D) 161051
Answer: (B)
Explanation: See http://quiz.geeksforgeeks.org/c-references-question-1/
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