Bit Operations using Macros

Use bitwise and, or and xor

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

// Define bitwise macros here
#define setb(r,n)   (r |= (1U << n))
#define clrb(r,n)   (r &=~(1U << n))
#define togb(r,n)   (r ^= (1U << n))

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    setb(reg, 2);
    setb(reg, 7);
    clrb(reg, 3);
    togb(reg, 5);
    return reg;
}

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

Solving Approach

• Use OR (|=) to set
• Use AND with NOT (&= ~) to clear
• Use XOR (^=) to toggle