Syntax of C strlen()

The syntax of strlen() function in C is as follows:

size_t strlen(const char* str);

Parameters

The strlen() function only takes a single parameter.

• str: It represents the string variable whose length we have to find.

Return Value

• This function returns the integral length of the string passed.

The strlen() function in C calculates the length of a given string. The strlen() function is defined in string.h header file. It doesn’t count the null character ‘\0’.