devxlogo

Using a string object in a context requiring a “read-only” char*

Using a string object in a context requiring a “read-only” char*

The advantages of a string object over a C-style char* are obvious. Yet there are times you may still need a null-terminated char*, for example, when legacy C code is still being used in your programs. The standard string class has the c_str() member function which returns the const char* representation of its object:

 void f() {string  s;s = "Hello";if( strcmp( s.c_str(), "Hello")== 0) //are they identical?cout <<"identical"<

Please note:

  • The const char* returned from the c_str() member function is owned by the string object, therefore, you should not attempt to delete it.
  • It points to a valid char* as long as you do not call any non-const member function of the string object.
  • See also  How to Avoid Money Transfer Scams  
    devxblackblue

    About Our Editorial Process

    At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

    See our full editorial policy.

    About Our Journalist