All of us, programmers have thought about an easier way to get a better and faster result. The STL allows us to make it. For example, to insert characters we had to make an array:
#include <iostream> //preprocessor directive
using namespace std; //namespace which allows us to use console out, console in & endl
int main()
{
char myArray[25]; //here we have to insert the length of our array
cin >> myArray; // input of our string
cout << myArray; //output of our string
return 0;
}
If we insert a two-words sentence, we will see as a return, only one part of it – the first word. How to correct it?
We have to use cin.get. Let’s see:
#include <iostream>
using namespace std;
int main()
{
char myArray[25];
cin.get(myArray, 24);
cout << myArray;
return 0;
}
And if we want to copy one string to another by using arrays it is not the best way to do it:
char myArray[] = "Hello my friend";
char myArray2[] = {'\0'};
strcpy(myArray2, myArray);
cout << myArray2 << endl;
You can see that the result is good. However there are problems – you have to remember that to copy one to another you have to use a special instruction strcpy and the order of your arrays. By using the STL Library you can solve it:
#include <iostream>
#include <string>
using namespace std;
int main()
{
string myString; //create string
getline(cin, myString); //similar to cin.get
cout << endl;
string myString2;
getline(cin, myString2);
cout << endl;
myString += myString2; //connecting one string to the another
cout << myString
string myString3(myString); //copy content of myString to myString3
return 0;
}
I think that using strings is more comfortable and better to learn. Moreover, in these days most of programmers use STL.
MJ
