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

int number_size(int n)
{
    int i;
    if (n < 0)
        n = -n;
    while (n > 0) {
        n = n/10;
        i++;
    }
    return i;
}

void my_snprintf(char *buffer, size_t count, const char *format, ...)
{
    int quantity = 0;
    for (int i = 0; format[i] != '\0'; i++)
        if (format[i] == '%')
            quantity++;

    va_list vl;
    va_start(vl, format);

    int j = 0;
    int k = 0;
    for (j; j < count; j++)
    {
        if (format[j] == '%')
        {
            j++;
            if (format[j] == 'd')
            {
                int num = va_arg(vl, int);
                int numberSize = number_size(num);
                while (numberSize > 0)
                {
                    int i = numberSize - 1;
                    int pw = 1;
                    while (i > 0)
                    {
                        pw = pw * 10;
                        i--;
                    }
                    buffer[k] = (((num / pw)%10) + '0');
                    //printf("%d", (num / pw)%10);
                    numberSize--;
                    k++;
                }
            }
            else if (format[j] == 'c')
            {
                char name = va_arg(vl, int);
                buffer[k] = name;
                k++;
            }
        }
        else
        {
            buffer[k] = format[j];
            k++;
        }

    }

    va_end(vl);
}

void main()
{
    char buffer [100];
    my_snprintf(buffer, 100, "Radiohead released %d albums with more than %d songs%c", 9, 200, '.');
    puts(buffer);
    getch();
}