Toggle each character in a string. In this article we will learn a C program to toggle each characters in a string i.e. to convert upper case characters to lower case characters and lower case ...

* most an inputted number of bytes. * @s1: The first string. * @s2: The second string. * @n: The maximum number of bytes of s2 to concatenate to s1. * Return: If the function fails - NULL. * Otherwise ...