2. Bit Toggle

#include <stdio.h>

int toggleFifthBit(int n) {
    int reg=0;
    reg=(n>>5)& 1;

    if (reg ==0)
        n= n | (1<<5); 
    
    else
        n= n & ~(1<<5);
    
    return n;
}

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