#include #include int ft_printf(char *fmt, ...) { va_list ap; int d; char c, *s; va_start(ap, fmt); while (*fmt) switch(*fmt++) { case 's': /* string */ s = va_arg(ap, char *); printf("string %s\n", s); break; case 'd': /* int */ d = va_arg(ap, int); printf("int %d\n", d); break; case 'c': /* char */ /* Note: char is promoted to int. */ c = va_arg(ap, int); printf("char %c\n", c); break; } va_end(ap); return (0); } int main(void) { char *s; char *str; char c; int i; s = "scd"; str = "bravo"; c = 'y'; i = 6; ft_printf(s, str, c, i); printf("\n", s, str, c, i); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); ft_printf("\n", ); printf("\n", ); return (0); } // usage : // %[flags][width][.precision][length]specifier // // [specifiers] // c character // s string of characters // p pointer adress // d (or i) signed decimal integer // i (or d) signed decimal integer // u unsigned decimal integer // x unsigned hexadecimal integer // X unsigned hexadecimal integer (capital letters) //( n nothing printed //( f decimal floating point //( g uses the shorter of %e or %f //( e scientific notation (mantissa/exponent) using e //((E scientific notation (mantissa/exponent) using E //((G uses the shorter of %E or %f //((o signed octal // // [flags] // - left-justify within the given field width // 0 left-pads the number with zeroes (0) instead of spaces, where // padding is specified (see width sub-specifier) //( + forces to precede the result with a plus or minus sign even for // positive numbers) //( (space) if no sign is going to be written, a blank space is inserted // before the value) //( # used with o, x or X specifiers the value is preceded with 0, 0x // or 0X respectively for values different than zero. Used with e, // E and f, it forces the written output to contain a decimal point // even if no digits would follow. By default, if no digits follow, // no decimal point is written. Used with g or G the reult is the // same as with e or E but trailing zeros are not removed) // // [width] // (nbr) minimum number of characters to be printed. if the value to be // printed is shorter than this number, the result is padded with // blank spaces. The value is not truncated even if the result is // larger // * the width is not specified in the format string, but as an // additional integer value arguement preceding the argument that // has to be formatted // // [.precision] // .nbr fot integer specifiers (d,i,o,x,X) - precision specifies the // minimum number of digits to be written. If the value to be // written is shorter than this number, the result is padded with // leading zeros. The value is not truncated even if the result is // longer. A precision of 0 means that no character is written for // the value 0. For e, E and f specifiers − this is the number of // digits to be printed after the decimal point. For g and G // specifiers − This is the maximum number of significant digits // to be printed. For s − this is the maximum number of characters // to be printed. By default all characters are printed until the // ending null character is encountered. For c type − it has no // effect. When no precision is specified, the default is 1. If the // period is specified without an explicit value for precision, 0 // is assumed // .* the precision is not specified in the format string, but as an // additional integer value argument preceding the argument that // has to be formated //