#include <iostream>
#define MINUS 2
int main()
{
    int n;
    int tempn;
    int count = 0;
    int sing = 1;
    char* str;
    char* curstr;
    int ch0 = (int)'0';
    std::cout << "Input number, PLEASE: ";
    std::cin >> n;
    if (n < 0){
        n *= -1;
        sing++;
    }
    tempn = n;
    while(tempn > 0) {
        tempn = tempn / 10;
        count++;
    }
    tempn = n;
    str = new char[count+sing];
    curstr = str + sing - 1;
    for (int i = count-1; i >= 0; i--) {
        curstr[i] = char(ch0 + tempn%10);
        tempn = tempn/10;
    }
    if(sing == MINUS) {
        str[0] = '-';
    }
    str[count + sing - 1] = '\0';
    std::cout << "str = " << str << std::endl;
    return 0;
}