Question

Possible Duplicate:
Post Increment and Pre Increment concept?

I cant understand how the “if condition” works with the increment/decrement operator in this scenario:

#include<stdio.h> 
void main() 
{ 
  int n=0; 
  if(n++) 
  { 
    printf("C-DAC"); 
  } 
  else if(n--) 
  { 
    printf("ACTS"); 
  } 
}

Its output is ACTS.

what is happening in the IF condition?

Answer 1

if (n++) It checks if n is not equal to zero and then increments n

else if (n--) It checks if n is not equal to zero and then decrements n

Your first if statement is not true (because n is zero), then n is incremented, and else if statement is checked (n is equal to 1 at this point), if (1) is true and printf("ACTS") is called