69 lines
2.6 KiB
Markdown
69 lines
2.6 KiB
Markdown
# ft_printf
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## Mandatory part
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Program name: libftprintf.a
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Turn in files: Makefile, *.h, */*.h, *.c, */*.c
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Makefile: NAME, all, clean, fclean, re
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External functs: malloc, free, write,
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va_start, va_arg, va_copy, va_end
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Libft authorized: Yes
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Description: Write a library that contains ft_printf(), a
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function that will mimic the original printf()
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You have to recode the printf() function from libc.
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The prototype of ft_printf() is:
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int ft_printf(const char *, ...);
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### Here are the requirements:
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• Don’t implement the buffer management of the original printf().
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• Your function has to handle the following conversions:
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cspdiuxX%
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• Your function will be compared against the original printf().
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• You must use the command ar to create your library.
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Using the libtool command is forbidden.
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• Your libftprintf.a has to be created at the root of your repository.
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5
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```%[$][flags][width][.precision][length modifier]conversion```
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You have to implement the following conversions:
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• %c Prints a single character.
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• %s Prints a string (as defined by the common C convention).
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• %p The void * pointer argument has to be printed in hexadecimal format.
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• %d Prints a decimal (base 10) number.
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• %i Prints an integer in base 10.
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• %u Prints an unsigned decimal (base 10) number.
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• %x Prints a number in hexadecimal (base 16) lowercase format.
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• %X Prints a number in hexadecimal (base 16) uppercase format.
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• %% Prints a percent sign.
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## Bonus
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• Manage any combination of the following flags: ’-0.’ and the field minimum width
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under all conversions.
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- '-' The converted value is to be left adjusted on the field
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boundary. (The default is right justification.) The
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converted value is padded on the right with blanks
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- '0' The value should be zero padded. For d, i, o, u, x, X, a,
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A, e, E, f, F, g, and G conversions, the converted value
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is padded on the left with zeros rather than blanks.
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- '.' precision
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• Manage all the following flags: ’# +’ (Yes, one of them is a space)
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- '#' For x and X conversions, a nonzero result has the string
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"0x" (or "0X" for X conversions) prepended to it.
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- ' ' (a space) A blank should be left before a positive number
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(or empty string) produced by a signed conversion.
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- '+' A sign (+ or -) should always be placed before a number
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produced by a signed conversion.
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If you plan to complete the bonus part, think about the
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implementation of your extra features from the start. This way,
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you will avoid the pitfalls of a naive approach.
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