To get the length of a string, use the length() function:
Example
string txt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
cout << "The length of the txt string is: " << txt.length();
cout << "The length of the txt string is: " << txt.length();
Tip: You might see some C++ programs that use the
size() function to get the length of a string. This is just an alias of length(). It is completely up to you if you want to use length() or size():
Example
string txt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
cout << "The length of the txt string is: " << txt.size();
cout << "The length of the txt string is: " << txt.size();
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