Bit Operations using Macros

Code

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

// Define bitwise macros here
int n=0;
uint8_t REG;
#define SETBIT REG=(REG | (1<<n))
#define CLRBIT REG=(REG & ~(1<<n))
#define TOGLBIT REG=(REG ^ (1<<n))

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    REG=reg;
   n=2;
   SETBIT;
n=7;
SETBIT;
n=3;
CLRBIT;
n=5;
TOGLBIT;
reg=REG;
    return reg;
}

int main() {
    uint8_t reg;
    

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

Solving Approach