Bit Operations using Macros

Code

#include <stdio.h>
#include <stdint.h>
#define set_bit(reg,bit) reg|=(1<<bit)
#define clear_bit(reg,bit) reg &=(~(1<<bit))
#define toggle_bit(reg,bit) reg ^=(1<<bit)
uint8_t modify_register(uint8_t reg) 
{
    set_bit(reg, 2);    // Set bit 2
    set_bit(reg, 7);    // Set bit 7
    clear_bit(reg, 3);  // Clear bit 3
    toggle_bit(reg, 5); // Toggle bit 5
    return reg;
}
int main() {
    uint8_t reg;
    scanf("%hhu", &reg);
    printf("%u", modify_register(reg));
    return 0;
}

Solving Approach