C++ String length()This function is used to find the length of the string in terms of bytes. This is the actual number of bytes that conform the contents of the string , which is not necessarily equal to the storage capacity. SyntaxParametersThis function contains single parameter. Return ValueThis function returns the integer value in terms of bytes. Here, s1 is a string and strlen function calculates the length of the string s1 and stores its value in len variable. Example 1Output: Length of the string is 21 Consider a string s1 and s1 contains value i.e Welcome to javatpoint .We calculate the length of the string using strlen function and stores in variable len.
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