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

char look;

#define CHUNK_SIZE 16
#define read_char() do { look = getc(stdin); } while (0)

int get_name(char **name)
{
    int i = 0;
    int chunk_size = CHUNK_SIZE;
    char *buffer = calloc(chunk_size, sizeof(char));

    while (!isspace(look))
    {
        buffer[i++] = look;
        read_char();
        if (i == chunk_size)
        {
            chunk_size += CHUNK_SIZE;
            buffer = realloc(buffer, chunk_size * sizeof(char));
        }
    }

    *name = calloc(i, sizeof(char));
    memmove(*name, buffer, i * sizeof(char));
    free(buffer);

    return i;
}

void init()
{
    read_char();
}

int main()
{
    init();

    char* name;
    get_name(&name);
    printf("Name: %s\n", name);
    free(name);

    return 0;
}