How to Convert a C++ String to Uppercase

Question

I need to convert a string in C++ to full upper case. I\'ve been searching for a while and found one way to do it:

#include 
#include 

        

Answer 1

Try this small program, straight from C++ reference

#include 
#include  
#include   
#include 
#include 

using namespace std;

int main()
{
    string s;
    cin >> s;
    std::transform(s.begin(), s.end(), s.begin(), std::ptr_fun(std::toupper));
    cout << s;
    return 0;

}

Live demo