Get a line with spaces of unknown size

Question

I want to read a string, the string can contain spaces.

I tried:

char* str;
cin >> str; // but I have to allocate a memory by making new

so I think about:

string str;
cin >> str;

but it reads until the first space.

can someone know how can I get it? maybe getline?

I can use only the includes of iostream and string.

Answer 1

Your suspicion is correct.

string str;
std::getline( cin, str );

This will read until a newline is detected, not just any whitespace character.