2. Bit Toggle

#include <stdio.h>

int toggleFifthBit(int n) {
    // Write your code here

    n ^= (1<<5);  //Use XOR to toggle a bit at a certain location.
    return n;

}

int main() {
    int n;
    scanf("%d", &n);
    printf("%d", toggleFifthBit(n));
    return 0;
}

Use XOR to toggle the bit.
XOR truth table is as follows:

A    B    Output (A)

0    0     0

1    0     1

0     1     1  -> Notice these 2 last rows. Assume that B is actually the bit that you do XOR operation.

1      1    0 ->  Thus whenever XOR is active (1) the A is toggled from its original state.