printf

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function that produces output according to a format.

• Prototype: int _printf(const char *format, ...);
• Returns: the number of characters printed (excluding the null byte used to end output to strings)
• Write output to stdout, the standard output stream
• Format is a character string. The format string is composed of zero or more directives. See man 3 printf for more detail.
• You need to handle the following conversion specifiers:
  • c
  • s
  • %
• You don’t have to reproduce the buffer handling of the C library printf function
• You don’t have to handle the flag characters
• You don’t have to handle field width
• You don’t have to handle precision
• You don’t have to handle the length modifiers

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