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GATE CSE 2011 | Question: 48

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23 23 votes

Consider the following recursive C function that takes two arguments.

unsigned int foo(unsigned int n, unsigned int r) {
    if (n>0) return ((n%r) + foo(n/r, r));
    else return 0;
}

What is the return value of the function $\text{foo}$ when it is called as $\text{foo(345, 10)}$?

  1. $345$
  2. $12$
  3. $5$
  4. $3$

3 Answers

13 13 votes
A) The function returns the sum of digits of the given number.

so 5+4+3 = 12
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