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ft_printf.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_printf.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rrangwan <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/01/25 19:16:33 by rrangwan #+# #+# */
/* Updated: 2022/01/28 13:05:13 by rrangwan ### ########.fr */
/* */
/* ************************************************************************** */
#include "ft_printf.h"
int print_c(char c)
{
write(1, &c, 1);
return (1);
}
int print_n(int n)
{
int temp;
temp = 0;
if (n < 0)
{
temp++;
write(1, "-", 1);
n *= -1;
}
return (print_n2(n) + temp);
}
int print_n2(unsigned int n)
{
int ret;
ret = 0;
if (n >= 10)
{
ret += print_n2(n / 10);
ret += print_n2(n % 10);
}
if (n < 10)
ret += print_c(n + '0');
return (ret);
}
int ft_printer(char conv, va_list *va)
{
int ret;
ret = 0;
if (conv == 'c')
ret += print_c(va_arg(*va, int));
if (conv == '%')
ret += write(1, "%", 1);
if (conv == 'd' || conv == 'i')
ret += print_n(va_arg(*va, int));
if (conv == 'u')
ret += print_n2(va_arg(*va, unsigned int));
if (conv == 'x' || conv == 'X')
ret += print_h(va_arg(*va, unsigned int), conv);
if (conv == 'p')
{
ret += print_s("0x");
ret += print_p(va_arg(*va, unsigned long int));
}
if (conv == 's')
ret += print_s(va_arg(*va, char *));
return (ret);
}
int ft_printf(const char *format, ...)
{
int ret;
int i;
va_list va;
ret = 0;
i = 0;
va_start(va, format);
while (format[i])
{
if (format[i] != '%')
{
write(1, &format[i], 1);
ret++;
}
if (format[i] == '%')
{
i++;
ret += ft_printer(format[i], &va);
}
i++;
}
va_end(va);
return (ret);
}