#include <stdarg.h>

void myprintf(const char *, ...);

void myprintf(const char *fmt, ...)
{
    va_list args; //this is actually just a placeholder to our first (variable) argument
    va_start(args, fmt); //set up our list so we can retrieve it
    while (*fmt) //loop through each character of the string
    {
        if (*fmt++ == '%') //our control character
        {                              //we increment it as well so our next character is our type spec
            switch (*fmt++) //case-select our list, and increment it as well.
            {
             case 'i': //integer
                 break;
             case 'u': //unsigned int
                 break;
             case 's': //string
                 break;
            }
        }
    }
    va_end(args);
}