#include <stdio.h> int main() { int i = 3; printf("%d", (++i)++); return 0; } |
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What is the output of the above program?
(A) 3
(B) 4
(C) 5
(D) Compile-time error
Answer: (D)
Explanation: In C, prefix and postfix operators need l-value to perform operation and return r-value. The expression (++i)++ when executed increments the value of variable i(i is a l-value) and returns r-value. The compiler generates the error(l-value required) when it tries to post-incremeny the value of a r-value.
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