C++ Pass A String

Question

Quick probably obvious question.

If I have:

void print(string input) {   cout << input << endl; } 

How do I call it like so:

print("Yo!"); 

It complains that I'm passing in char *, instead of std::string. Is there a way to typecast it, in the call? Instead of:

string send = "Yo!"; print(send); 

Answer 1

You can write your function to take a const std::string&:

void print(const std::string& input) {     cout << input << endl; } 

or a const char*:

void print(const char* input) {     cout << input << endl; } 

Both ways allow you to call it like this:

print("Hello World!\n"); // A temporary is made std::string someString = //... print(someString); // No temporary is made 

The second version does require c_str() to be called for std::strings:

print("Hello World!\n"); // No temporary is made std::string someString = //... print(someString.c_str()); // No temporary is made