Bit Operations using Macros

Code

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

// Bitwise macros for readability
#define BIT(n)        (1U << (n))
#define SET_BIT(reg, n)     ((reg) |= BIT(n))
#define CLEAR_BIT(reg, n)   ((reg) &= ~BIT(n))
#define TOGGLE_BIT(reg, n)  ((reg) ^= BIT(n))

// Function to modify register
uint8_t modify_register(uint8_t reg) {
    SET_BIT(reg, 2);      // Set bit 2
    SET_BIT(reg, 7);      // Set bit 7
    CLEAR_BIT(reg, 3);    // Clear bit 3
    TOGGLE_BIT(reg, 5);   // Toggle bit 5
    return reg;
}

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

Solving Approach

 

 

 

Upvote
Downvote
Loading...

Input

0

Expected Output

164