Pointers (die! die! die! )

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;
}

Code:

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#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;
}

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

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

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

Quote:

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

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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.

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