TEST series :TESTBOOK

Question

Comments

b -= a--; // b = b - a--;

 

But as per Dennis Ritchie b=b-(a--)

Answer 1

#include <stdio.h>
int main()
{
  int a=21;
  int b, b1;
  b = a++; // b = 21 a = 22
  b1 = ++a; // b1 = a = 23
  ++a; // a = 24 
  a--; // a = 23
  b -= a--; // b = b - a--; b = -2 a = 2
  printf("%d", b); // prints -2 
  return 0;
}

 

Comments

why a=2?

 b = a++; // b = 21 a = 2