Suppose the function strlen (which returns the length of its string argument) was not already defined for you. Give a function definition for strlen. Note that strlen has only one argument, which is a...

Suppose the function strlen (which returns the length of its string

argument) was not already defined for you. Give a function definition for

strlen. Note that strlen has only one argument, which is a C string. Do

not add additional arguments; they are not needed.