string concatenation

**criticalerror** · 03-01-2004

How do i concantenate two strings in C++? Is there a built in function that does that? I want to take these two strings for example:

Johnson

Sam

and make it one string as Johnson Sam

**criticalerror** · 03-01-2004

How do i concantenate two strings in C++? Is there a built in function that does that? I want to take these two strings for example:

Johnson

Sam

and make it one string as Johnson Sam

**criticalerror** · 03-01-2004

How do i concantenate two strings in C++? Is there a built in function that does that? I want to take these two strings for example:

Johnson

Sam

and make it one string as Johnson Sam

**criticalerror** · 03-01-2004

sorry to make three posts, something strange happened when I sent the form...

**ripper079** · 03-01-2004

Code:

std::string n1("Johnson");
std::string n2("Sam");

std::string nresult = n1 + std::string(" ") + n2;

Don´t forget include correct headers.

P.S. The moderators are gonna kill you for 3 identical threads

**criticalerror** · 03-01-2004

i apologized in one of the three posts... i didn't mean to post three times, but the page wouldn't send for some reason... i was just too anxious.... anyway, thanks for the answer.

**manofsteel972** · 03-01-2004

You can use strcat() to combine two strings together

Code:

#include <cstring>
#include <iostream>

using namespace std;

int main()
{

char stringarray[50];
char string2[]="to be alive. ";

strcpy(stringarray,"Isn't it a great day ");
strcat(stringarray,string2);
strcat(stringarray,"I think so.");

cout<<stringarray<<endl;

return 0;
}

OR You can use the STRING class which is much easier

Code:

#include <string>
#include <iostream>

using namespace std;

int main()
{
string MyFirstname;
string MyLastname;
string FinalString;

string Sentence="is my full name.";
cout<<"Please Enter Your First Name:  ";
cin>>MyFirstname;
cout<<"Please Enter Your Last Name:  ";
cin>>MyLastname;

FinalString=MyFirstname+" "+MyLastname+" "+Sentence;

cout<<FinalString<<endl;

return 0;
}

**sean** · 03-01-2004

Uh.... strcat() or something like that. Should be easy to find in the function reference from the home page. Don't forget to concatenate a " " into that as well.

**joshdick** · 03-01-2004

Overloaded operators can be quite useful.

Code:

string str1="Foo", str2="Bar", str3;

str3 = str1 + ' ' + str2; // str3 is now "Foo Bar"

**major_small** · 03-02-2004

I've always used strcat()... mostly because I don't know much about the string class yet...

**President** · 03-02-2004

When you know the string class, you'll never want to use strcat or any other C string functions.

**Dante Shamest** · 03-02-2004

>> When you know the string class, you'll never want to use strcat or any other C string functions.

True. However, if you're working with older C code like the Windows API, you'll still have to learn what they are and how to use them.

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