C - Printf

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Menu:

• ➤ Description
• ➤ Flowchart
• ➤ Format types
• ➤ Examples
• ➤ Files that make up the _printf
• ➤ Requirements
• ➤ Author
• ➤ License

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➤ Description:

The '_printf' function emulates the standard C language function of the same name, responsible for printing formatted strings on screen. It takes as input an initial variable, a character string, and goes through each character one by one, then prints it.

When it encounters a format specifier (e.g. %s or %d), it extracts the corresponding data type from the arguments and prints the contents of the associated variable.

In the case of an undeclared format specifier, such as %T, the _printf function behaves intuitively by printing the specifier as is, preserving the function's flexibility to handle future directives.

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➤ Flowchart:

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➤ Format types:

Type	Output
%c	Print argument of character type
%s	Print argument of string type
%i	Print argument of integer type
%%	Prints a single %
%d	Print a decimal (base 10) number

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➤ Examples:

• String without type: _printf("Hello!");

  • Output: Hello!

• Charater : _printf("%c", 'A');

  • Output: A

• String: _printf("Whatever happens, %s", "we're a duo that rocks!");

  • Output: Whatever happens, we're a duo that rocks!

• Integer: _printf("%i", "92");

  • Output: 92

• Decimal: _printf("%d", "2023");

  • Output: 2023

• %: _printf("Print a single percent sign : %%");

  • Output: Print a single percent sign : %

• _printf("Hi Adrien, for this %d session, do you think we could have a %c or min of %i %%?", 2023, 'A', 60);

  • Output: Hi Adrien, for this 2023 session, do you think we could have a A or min of 60 %?

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➤ Files that make up the _printf:

• 1_printf.c : Contains the source code for the printf function.

• 2_replace_specifier.c : Replacing format specifiers in source code. Format specifiers, such as %s or %d.

• 3_print_functions.c : Print different types of data.

• main.h : Header file containing prototypes of functions used in source code. It is included in the rest of the files via the expression: #include "main.h".

• _putchar.c: Writes the character c to stdout.

• flowchart.jpeg: Graphical representation of printf.

• LICENSE: MIT license.

• man_3_printf: Manuel printf.

• README.md: Docs.

• Compile the code using : gcc -Wall -Werror -Wextra -pedantic -std=gnu89 -Wno-format *.c

• Read the man using : man ./man_3_printf

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➤ Requirements:

General

• Files can be compiled on Ubuntu 20.04 LTS using gcc, using the options -Wall -Werror -Wextra -pedantic -std=gnu89.
• A README.md file is bring at the root of the folder of the project.
• Our code use the Betty style.
• There is no use global variables.
• There is no more than 5 functions per file.
• You can use your own main.c files at compilation.
• If you want add some functions, you can put the prototypes in the header file called main.h.

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➤ Author:

• François Gosselin Github
• Amandine Kemp Github

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➤ License:

This project is subject to the MIT license. For detailed information on the conditions of this license, please consult the "LICENSE" file included in the project.