Bit Operations using Macros

Code

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

// Define bitwise macros here
#define setBIT( reg, pos) (reg|(1<<pos))
#define clearBIT(reg,pos) (reg & ~(1<<pos))
#define ToggleBIT(reg,pos)(reg ^ (1<<pos))
uint8_t modify_register(uint8_t reg) {
    
    reg = setBIT(reg,2);
    reg = setBIT(reg,7);
    reg = clearBIT(reg,3);
    reg = ToggleBIT(reg,5);
    // Apply operations in order
    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