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String Concatenation

 
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String Concatenation
Mo821
post 10 Dec, 2005 - 10:00 AM
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this is my assignment

take arguments of type string( pass by value or reference

return the concatenation function with entered strings

print to screen concentation of the entered string and its length. main () must be used thereturn value of the concatenate function to get lenght of resulted string.


#include <cstring>
#include <iostream>

using namespace std;

int main()
{
char ch;
int line_count = 0;

char *s1 = new char[999];
char *s2 = new char[999];
char *s3 = new char[999];

cout << "Please enter a string: " << endl;
cin >> s1;

cout << " Please enter a second string: " << endl;
cin >> s2;
cout << strcat(s1, s2)<< endl;



if ( s1 == s2)
cout << "The concatenation of " << endl;
}


if some one can help me out, that would be awesome in correcting this program. Thanks!

Mo
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Mrafcho001
post 10 Dec, 2005 - 10:13 AM
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what do you mean by "concentration"?

you can also use the string class... It gives you a lot of useful functions. Such as string.size() returns the size of the string, which you need.

EDIT:

nvm im an idiot, and cant read for my life.


you can always do something like this:

CODE

#include <iostream>
#include <string>
using namespace std;


int main()
{
    string str1, str2;
    cout << "INPUT str1: ";
    getline(cin, str1, '\n');
    cout << "INPUT str2: ";
    getline(cin, str2, '\n');

    str1.append(str2);
    cout << str1 << endl;

    return 0;
}


you can use str1.size() to get hte string size.

This post has been edited by Mrafcho001: 10 Dec, 2005 - 10:22 AM
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born2c0de
post 11 Dec, 2005 - 12:10 AM
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printf("I'm a %XR",195936478);

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QUOTE(Mo821 @ 11 Dec, 2005 - 12:27 AM)
char *s1 = new char[999];
char *s2 = new char[999];
char *s3 = new char[999];

*Ouch*
I think even 255 Characters are sufficient for each string at the most.

Besides, you arent using s3 at all.Though the compiler wont include it in the executable file it is good practice to keep code clean.

Comparing strings with the '=' operator wont get you anywhere if you want its length ( and even otherwise...use strcmp )
Use the strlen Function for its length.
For eg.
CODE

cout<<strlen(strcat(s1,s2));

will return the length of the concactenated string.
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Amadeus
post 11 Dec, 2005 - 08:21 AM
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I have to agree with Mrafcho001 on this one...if you using C++, then you should use the string object instead of character arrays.
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