Swap without temporary variableThis tip submitted by Moosa Baransi on 2013-03-01 04:52:27. It has been viewed 5000 times.Rating of 5.2 with 68 votes You can swap between two variable using the XOR operation as shown below: int a=5, b=-3; a ^= b ^= a ^= b; printf("a = %d, b = %d\n", a, b); Explanation: Assume a = x, b = y; The order of the XOR is right to left, so we will start from right: a ^= b --> a = x ^ y b ^= a --> b = y ^ (x ^ y) = x a ^= b --> a = x ^ y ^ x = y More tips Help your fellow programmers! Add a tip! |