What is the value of c after execution of this statement c = c ^ c;?
Answer: Zero
The truth table of XOR is as follows:
| XOR(^) | 0 | 1 |
| 0 | 0 | 1 |
| 1 | 1 | 0 |
Thus whatever the current value of c may be when it is XOR'ed with itself, the only combinations possible are 00 and 11 which results in a zero (as seen in truth table). Thus all bits become zero after xor operation making the value of c zero.
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