DaniWeb Forum Index > Software Development > C++

C++ RSS

char arrays and strcpy trouble

Please support our C++ advertiser: Intel Parallel Studio Home

Thread Solved

•

Join Date: Aug 2008

Posts: 87

Reputation: freelancelote is an unknown quantity at this point

Solved Threads: 2

freelancelote freelancelote is offline

Offline

Junior Poster in Training

char arrays and strcpy trouble

Nov 18th, 2008

Hi,

the following code works fine, that is, strcpy effectively copies the whole string on temporal to word.

 Help with Code Tags 
 cpp Syntax (Toggle Plain Text) 
char word[20];
char temp[ ] = "hola";
cout << temporal << endl;
strcpy(word, temporal);
cout << word << endl;
char word[20];
char temp[ ] = "hola";
cout << temporal << endl;
strcpy(word, temporal);
cout << word << endl;

However, if I try to use the heap to store the "word" array then I'm in trouble and I get copied only the first character.

 Help with Code Tags 
 cpp Syntax (Toggle Plain Text) 
char * word = new char [20];
char temporal[ ] = "hola";
strcpy(word, temporal);
cout << word << endl; // it only prints h
char * word = new char [20];
char temporal[ ] = "hola";
strcpy(word, temporal);
cout << word << endl; // it only prints h

The question is what am I doing wrong? Is there a function to do that or do I have to write my own function? There is probably something I don't quite understand about strings but don't know what it is.
Please, any help is appreciated

•

Join Date: Jun 2008

Posts: 182

Reputation: mrboolf will become famous soon enough

Solved Threads: 18

mrboolf

Offline

Junior Poster

Re: char arrays and strcpy trouble

Nov 18th, 2008

strange,

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
#include <iostream>
 
using std::cout;
using std::endl;
 
int main(void) {
	char * word = new char [20];
	char temporal[ ] = "hola";
	strcpy(word, temporal);
	cout << word << endl;
	return 0;
}
#include <iostream>

using std::cout;
using std::endl;

int main(void) {
	char * word = new char [20];
	char temporal[ ] = "hola";
	strcpy(word, temporal);
	cout << word << endl;
	return 0;
}