Set or Clear a Specific Bit in a Register

Code

#include <stdio.h>

unsigned char modifyBit(unsigned char reg, int pos, int mode) {
    if (mode == 1) {
        // Set the bit at position 'pos'
        reg |= (1 << pos);
    } else {
        // Clear the bit at position 'pos'
        reg &= ~(1 << pos);
    }
    return reg;
}

int main() {
    unsigned char reg;
    int pos, mode;

    // Input: register value, bit position, mode
    scanf("%hhu %d %d", &reg, &pos, &mode);

    // Output the modified register value
    printf("%u\n", modifyBit(reg, pos, mode));

    return 0;
}

Solving Approach