#include <stdio.h>
#include <stdlib.h>

#define BITMASK 0x3FF // 0b1111111111 in binary represents the last 10 bits

char* last10BitsToString(unsigned short num) {
    // Apply bitmask to get the last 10 bits
    unsigned short last10Bits = num & BITMASK;

    // Allocate memory for the string representation
    char* str = (char*)malloc(11 * sizeof(char)); // 10 bits + '�'

    if (str == NULL) {
        printf("Memory allocation failed.n");
        exit(1);
    }

    // Convert the last 10 bits to string
    int i;
    for (i = 0; i < 10; i++) {
        str[9 - i] = (last10Bits & (1 << i)) ? '1' : '0';
    }
    str[10] = '�'; // Null-terminate the string

    return str;
}

int main() {
    unsigned short num = 12345; // Example unsigned short
    char* str = last10BitsToString(num);
    printf("Last 10 bits of %u in binary: %sn", num, str);
    free(str); // Don't forget to free the allocated memory
    return 0;
}