Pointers (die! die! die! )

[BatmaN77]

Could anyone spare some advice as to the function of that while statement at the bottom, esp. the "/0". Thanks.

#include <iostream.h>
int stringcopy(char *to, char *from);
int main()
{
char from[] = "";
cin>>from;
char to[sizeof from] = "";
stringcopy(to, from);
cout<<from<<to;
return 0;
}

int stringcopy(char *to, char *from);
{
while ( (*to = *from) != '\0' )
{
to++;
from++;
}
return 0;
}

[Fordy]

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

#define MAX_STR_LEN 50//Max length

int stringcopy(char *to, char *from);


int main()
{
char from[MAX_STR_LEN] = {0},
	 to[MAX_STR_LEN] = {0};

cin.getline(from,MAX_STR_LEN);//Allow line with spaces
stringcopy(to, from);
cout  << from << " "<< to;
return 0;
}

int stringcopy(char *to, char *from)
{
while ( (*to = *from) != '\0' )
{
to++;
from++;
}
return 0;
}

You need to create space for the strings.....

Try checking out the string object as defined in the C++ std library....makes life easier

[BatmaN77]

Thanks, but i don't really see the significance of the '\0' in the while loop.

[Fordy]

Originally posted by BatmaN77
Thanks, but i don't really see the significance of the '\0' in the while loop.

LOL....you put it there dude!!!

Strings in C all end with a NULL char (0 on the ASCII charector list)....so all you are doing is looping through until you reach the NULL...and that marks the end of the string.

[BatmaN77]

Noooo, that example was from a book. But thanks, I finally get it.