2. Bit Toggle

#include <stdio.h>

int toggleFifthBit(int n) {
    return n^(1<<5);
}

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

take int n as input

identify 5th bit(0-based index)

create mask-shift 1 left by 5

use XOR (^ )with mask to toggle the bit 

return and print result