getline and substr

[Kees Hoogendijk]

Hallo,
I've got 2 error msg, line 11 and 24. I don't understand both of them.
Can someone type me in the normal language and help me here out?
TI@
Wen


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

int main()
{
char postco[7];
cout<<"postcode : ";
getline(postco,7); //11 no matching function for
call

if (postco[0]!=0 && isdigit(postco[0] ))
{
cout <<"s ";
cin.get();
}
else
{
cout<< "w";
cin.get();
}

if (postco.substr(4,2)!=" ") //24 request for member `substr'
in
{
cout<<"G";
cin.get();
}
else
{
cout<<"ng";
cin.get();
}
}

 

[Moonlit]

Hi,

Hallo,
I've got 2 error msg, line 11 and 24. I don't understand both of them.
Can someone type me in the normal language and help me here out?
TI@
Wen


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

int main()
{

string postco;
i.s.o char postco

char postco[7];
cout<<"postcode : ";
getline(postco,7); //11 no matching function for
call

if (postco[0]!=0 && isdigit(postco[0] ))
{
cout <<"s ";
cin.get();
}
else
{
cout<< "w";
cin.get();
}

if (postco.substr(4,2)!=" ") //24 request for member `substr'
in
{
cout<<"G";
cin.get();
}
else
{
cout<<"ng";
cin.get();
}
}

Regards, Ron AF Greve.

 

[Jeff Schwab]

Hallo,
I've got 2 error msg, line 11 and 24. I don't understand both of them.
Can someone type me in the normal language and help me here out?
TI@
Wen


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

int main()
{
char postco[7];
cout<<"postcode : ";
getline(postco,7); //11 no matching function for call

cin.getline( postco, 7 ); // ITYM

if (postco[0]!=0 && isdigit(postco[0] ))
{
cout <<"s ";
cin.get();
}
else
{
cout<< "w";
cin.get();
}

cout << ( isdigit( postco[ 0 ] ) ? "s " : "w" );

cin.get( );

if (postco.substr(4,2)!=" ") //24 request for member `substr' in

If you want substr, use a std::string instead of an array of characters.
Anyway, the two strings used here will never be the same. The one on
the left has length two, but the one on the right has length 1.

{
cout<<"G";
cin.get();
}
else
{
cout<<"ng";
cin.get();
}
}

What's with all those cin.get()'s? Here's how to do what I think you meant.
#include <iostream>
#include <string>
#include <cctype>

/* Format a postal code.
*/
std::string format( std::string const& s )
{
if( s.empty( ) )
{
throw "Can't format postal code for empty string.";
}

return
std::string( "postcode: " ) +
( std::isdigit( s[ 0 ] ) ? "s " : "w" ) +
( s.substr( 4, 1 ) != " " ? "G" : "ng" );
}

int main( )
{
std::string postal_code;

std::getline( std::cin, postal_code );

std::cout << format( postal_code ) << std::endl;
}

 

[Ron Natalie]

Hallo,
I've got 2 error msg, line 11 and 24. I don't understand both of them.
Can someone type me in the normal language and help me here out?

postco is an array of 7 char, it is NOT a string,
Change the definition to
string postco;

 

[Kees Hoogendijk]

Thank you very much, three of you.
I 'd take a try, it works.
Regards

Wen