How to increment a number by 1 without using + operator ?

Use Bitwise operator to add 1 to binary representation
Check the each bit and flip it using bitwise operator


Here, number is input and output both

int one = 1;

/* Flip all the set bits until we find a 0 */

while((number & one)!=0 ) {

   number = number^one;

   one <<= 1;

}

/* flip the rightmost 0 bit */

number = number^one;