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Bit Operations using Macros

Code

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

// Define bitwise macros here

#define SET_BIT(reg, val) ((reg) |= (1 << (val)))
#define CLEAR_BIT(reg, val) ((reg) &= ~(1 << (val)))
#define TOGGLE_BIT(reg, val) ((reg) ^= (1 << (val)))

uint8_t modify_register(uint8_t reg) {
    SET_BIT(reg, 2);
    SET_BIT(reg, 7);
    CLEAR_BIT(reg, 3);
    TOGGLE_BIT(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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Input

0

Expected Output

164