Check if one string is a prefix of another

Question

I have two strings which I\'d like to compare: String and String:. Is there a library function that would return true when passed these two strings

Answer 1

Easiest way is to use substr() and compare() member functions:

string str = "Foobar";
string prefix = "Foo";

if(str.substr(0, prefix.size()).compare(prefix) == 0) cout<<"Found!";