Bit Toggle

Code

#include <stdio.h>

// Perform XOR on bit 5
#define TOGGLE_REG_BIT(reg) ((reg) ^= (1 << 5))

int toggleFifthBit(int n) {
    return TOGGLE_REG_BIT(n);
}

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

Solving Approach