To use bitwise complement operator(with example) created by hygull - https://repl.it/Ex7l/2

To use bitwise complement operator(with example).c

/*
   Date of creation : 28/12/2016, Wednesday.
   Aim of program   : To use bitwise complement operator(with example).
   Note             : Computer stores -ve numbers as 2's complement of their +ve form.
                      eg. -2 will be stored as 2's complement of -2
*/
#include <stdio.h>

int main()
{
    int a;
    printf("typeof(a) : int\n");
    printf("sizeof(a) : %d bytes\n", sizeof(a));

    a=1;
    printf("if a = 1  then  ~a = %d\n",~a); //-2
    /*
       1 = 0000 0000 0000 0000 0000 0000 0000 0001
      ~1 = 1111 1111 1111 1111 1111 1111 1111 1110
      
       Lets get the binary representation of -2
       2 = 0000 0000 0000 0000 0000 0000 0000 0010 (binary representation of 2)
      ~2 = 1111 1111 1111 1111 1111 1111 1111 1100 (1's complement of 2)
      
      ~2+1: 
           1111 1111 1111 1111 1111 1111 1111 1101 
          +0000 0000 0000 0000 0000 0000 0000 0001
          ------------------------------------------
           1111 1111 1111 1111 1111 1111 1111 1110   (Binary representation of -2 or 2's complement of 2)
    
       Now you can compare that 2's complement of 2 and 1's complement of 1, both are same.

    */
    a=2;
    printf("if a = 2  then  ~a = %d\n",~a);//-3
    
    a=3;
    printf("if a = 3  then  ~a = %d\n",~a);//-4
    
    a=4;
    printf("if a = 4  then  ~a = %d\n",~a);//-5

    return 0;
}

/* OUTPUT:-

typeof(a) : int
sizeof(a) : 4 bytes
if a = 1  then  ~a = -2
if a = 2  then  ~a = -3
if a = 3  then  ~a = -4
if a = 4  then  ~a = -5

*/