Bit Operations using Macros

Code

#include <stdio.h>
#include <stdint.h>

// Define bitwise macros here
#define setBit(reg,b) (reg|=(1<<b))
#define clearBit(reg,b) (reg&=~(1<<b))
#define toggleBit(reg,b) (reg^=(1<<b))

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    setBit(reg,2);
    setBit(reg,7);
    clearBit(reg,3);
    toggleBit(reg,5);
    return reg;
}

int main() {
    uint8_t reg;
    scanf("%hhu", &reg);
    printf("%u", modify_register(reg));
    return 0;
}

Solving Approach