Algorithms | Searching | Question 1
What is the output of following program?
#include <stdio.h> void print(int n, int j) { if (j >= n) return; if (n-j > 0 && n-j >= j) printf("%d %d\n", j, n-j); print(n, j+1); } int main() { int n = 8; print(n, 1); } |
(A) 1 7
2 6
3 5
4 4
4 4
(B) 1 7
2 6
3 5
4 4
(C) 1 7
2 6
3 5
(D) 1 2
3 4
5 6
7 8
Answer: (B)
Explanation: For a given number n, the program prints all distinct pairs of positive integers with sum equal to n.
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