An array name is a constant pointer to the first element of the array, and that's why we can't even copy arrays using assignment.( arrayA = arrayB is not allowed).Finally, we casted the constantness (const_cast) to make it char * type. In the code, we made a C++ string from stream ( ss.str()), then converted it to C string ( const char *) using c_str(). The following code is converting int to string, and it can be an example of returning a pointer to character array from C++ string. Strlen(pHello)=5, the terminating null character is not included. We should always declare a pointer to a string literal as const char *. "Hello" is a string literal, and we may want to use the following to assign it to a pointer:.This difference creates several implications, which we'll explore shortly. However, the length of an array is set at the creation time of the array whereas the length of a string may change during the execution of a program. Both representations share the same fact: they represent contiguous areas of memory. The primary difference between a string and an array of characters revolves around length. While C++ inherits this data structure from C, it also includes strings as a higher-level abstraction in the standard library. It has a starting point and ends with a string-termination character. In C, when we use the term string, we're referring to a variable length array of characters. C++ class which is Standard C++ string.
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