My implementation of the printf function, and with flags:
- %c Prints one character.
- %s Prints a string (as defined by the general convention C).
- %p The void pointer argument * must be printed in hexadecimal format.
- %d Outputs a decimal number (base 10).
- %i Outputs an integer in base 10.
- %u Prints an unsigned decimal number (base 10).
- %x Prints a number in hexadecimal format (base 16) in lowercase.
- %X Prints a number in hexadecimal format (base 16) in uppercase.
- %% Displays the percent sign.
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