Bit Operations using Macros

Code

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

// Define bitwise macros here
#define SET_B(r,b) ((r) |= (1<<(b)))
#define CLEAR_B(r,b) ((r) &= ~(1<<(b)))
#define TOGGLE_B(r,b) ((r) ^= (1<<(b)))

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    SET_B(reg,2);
    SET_B(reg,7);

    CLEAR_B(reg,3);

    TOGGLE_B(reg, 5);
     
    return reg;
}

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

Solving Approach

 

 

 

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Expected Output

164