/*Write a C program that takes a hexadecimal number and an integer 'pos' as input.
Set 'pos' number of bits from the right to 1 in the given hexadecimal number
and print the modified hexadecimal number as the output.*/

#include <stdio.h>

int set_all_right_bits(int x, int pos) {
    for (int i = 0; i < pos; i++) {
        x = x | (1 << i);//0001 << 1-4 so all becomes 1111 | makes 0,1 to 1
    }
    return x;
}

int main() {
    int a;//0xaa55
    int pos;//4
    
    printf("Enter a hexadecimal number: ");
    scanf("%x", &a);

    printf("Enter the number of bits to set from the right: ");
    scanf("%d", &pos);

    printf("Input: 0x%x, pos = %d\n", a, pos);
    
    int out = set_all_right_bits(a, pos);
    
    printf("Output: 0x%x\n", out);
    return 0;
}