#include <iostream>

char* getline()
{
    char c = std::cin.get();
    char* c_Ptr = &c;
    int size = 10000;
    char* mas = (char*) malloc(size);
    int i = 0;

    if (c == '\0')
        return c_Ptr;

    while ( ((c == '\0') || (c == '\n')) != 1) {

            *(mas + i) = c;
            *(mas + i + 1) = '\0';
            i++;

            if (i == size)
            {
                size = size * 2;
                mas = (char *) realloc(mas, size);
                mas[size] = '\0';
            }
            c = std::cin.get();
    }
    return mas;
}