Bit Operations using Macros

Code

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

#define SET_BIT(reg, n)    ((reg) |=  (1U << (n)))
#define CLEAR_BIT(reg, n)  ((reg) &= ~(1U << (n)))
#define TOGGLE_BIT(reg, n) ((reg) ^=  (1U << (n)))
uint8_t modify_register(uint8_t reg) {
    
    SET_BIT(reg, 2);      // Đặt bit 2
    SET_BIT(reg, 7);      // Đặt bit 7
    CLEAR_BIT(reg, 3);    // Xóa bit 3
    TOGGLE_BIT(reg, 5);   // Chuyển đổi 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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Input

0

Expected Output

164