Changing a capital letter (read from cin) to lower case?

Question

i wanna change the capital cin to lower case for the input , for example if cin>> one one=R it should be r so it convert it automatically

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Answer 1

You can write your code using transform:

string one;
string two;
cout << "\nPlayer One, please enter your move: ('p'  for Paper, 'r' for Rock, '" << std::endl;
cin >> one;

std::transform(one.begin(), one.end(), one.begin(), ::tolower);
cout <<"\nPlayer Two, please enter your move: ('P' for Paper, 'R' for Rock, 'S'" << std::endl;
cin >> two;
std::transform(two.begin(), two.end(), two.begin(), ::tolower);
std::cout << "one=" << one << " ; two=" << two << std::endl;

The output may be as follows (for R, P):

Player One, please enter your move: ('p'  for Paper, 'r' for Rock, '
R

Player Two, please enter your move: ('P' for Paper, 'R' for Rock, 'S'
P
one=r ; two=p