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Previous Year Question (PYQs)

What is the output?

#include <stdio.h>
void main(){
  int x = -1, y = 1, z = 0;
  if(x && y++ && z)
    ++x, y++, --z;
  printf("%d, %d, %d", x++, y++, z++);
}




Solution

Explanation: In the condition x && y++ && z, since z = 0, the logical AND short-circuits and the body of the if is not executed. However, y++ is evaluated before the short-circuit, so y becomes 2. Values before printing: $$ x = -1,\ y = 2,\ z = 0 $$ So the program prints: $$ (-1,\ 2,\ 0) $$

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