CODEWITHSUNDEEP
c++arrays
user3377191
user3377191

Reputation: 241

How to grab certain elements of an input?

For a project I'm working on, I want to convert a letter to a number (like A = 20). So I want to be able to take "AQJD" and convert that to a number. How do I take what a user inputted and grab certain elements.

Something as simple as 

char myArray [] = "AQJD"

can be grabbed like so: 

myArray[0] // this will return A because A is the 0th element

but how can I get what a user inputted to do something like what's above. I tried to do this (pasted below) but it wouldn't work. 

string x; //assume I included <string> already
cout << "Please input what you would like to change: " << endl;
cin >> x;
char mine [] = x;
cout << mine[2] << endl;

Is there a way to pass a variable to an array like I tried above?

Upvotes: 0

Views: 36

Answers (2)

KugBuBu
KugBuBu

Reputation: 630

You may use .c_str() method of std::string that is quite similar:

const char *mine = x.c_str();
cout << mine[2] << endl;

Upvotes: 0

David G
David G

Reputation: 96810

std::string already has an operator[] function that returns the character at the specified position. It's exactly the same as a regular char array:

cout << x[2]; // J

Upvotes: 1

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