Bit Operations using Macros

Code

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

// Define bitwise macros here
#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) {
    // Apply operations in order:
    SET_BIT(reg,2) | SET_BIT(reg,7); // 1.Set bits 2 and 7
    CLEAR_BIT(reg,3);                // 2.Clear bit 3
    TOGGLE_BIT(reg,5);               // 3.Toggle bit 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