如何使函数返回特定位数

#include <stdio.h>

char* getSpecificDigits(int num, int digits) {
    char* result = (char*)malloc(digits + 1);
    sprintf(result, "%0*d", digits, num);
    return result;
}

int main() {
    int number = 12345;
    int specificDigits = 6;
    char* result = getSpecificDigits(number, specificDigits);
    printf("Result: %s\n", result);
    free(result);
    return 0;
}

def get_specific_digits(num, digits):
    result = num % (10 ** digits)
    return result

number = 12345
specific_digits = 3
result = get_specific_digits(number, specific_digits)
print("Result:", result)

function getSpecificDigits(num, digits) {
    var digitsArray = Array.from(String(num), Number);
    var specificDigitsArray = digitsArray.slice(-digits);
    var result = specificDigitsArray.join('');
    return result;
}

var number = 12345;
var specificDigits = 4;
var result = getSpecificDigits(number, specificDigits);
console.log("Result:", result);