_printf.c

#include "main.h"

/**
 * _printf - function that produces output according,
 * to a format.
 * @format: the format string.
 *
 * Return: number of bytes printed.
 */
int _printf(const char *format, ...)
{
    int sum = 0;
    va_list ap;
    char *p, *start;

    va_start(ap, format);

    if (!format || (format[0] == '%' && !format[1]))
        return (-1);
    if (format[0] == '%' && format[1] == ' ' && !format[2])
        return (-1);

    for (p = (char *)format; *p; p++)
    {
        if (*p != '%')
        {
            sum += _putchar(*p);
            continue;
        }
        start = p;
        p++;
        if (!get_specifier(p))
            sum += print_from_to(start, p, 0);
        else
            sum += get_print_func(p, ap);
    }
    _putchar(-1);
    va_end(ap);
    return (sum);
}