Bit Operations using Macros

Code

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

// Define bitwise macros here
#define seto(n,pos) { n |(1<<pos)}
#define clearb(n, pos) {n &~(1<<pos)}
#define togglen(n, pos) {n ^(1<<pos)}

uint8_t modify_register(uint8_t reg) {
    reg = seto(reg,2);
    reg = seto(reg,7);
    reg = clearb(reg,3);
    reg = togglen(reg, 5);
    // Apply operations in order
    return reg;
}

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

Solving Approach