not declared in this scope

[umfan110]

Hey i am really new and i bought a book on coding for c++ and every time i mannulay type in some sample code out of the book it always says random errors like 'system' was not declared in this scope.... what is a scope and how do i fix it because i run into that error a lot.

thanks

here is the code by the way its out of the book showing me the bool function

#include <cstdio>
#include <iostream>
#include <iostream>

using namespace std;

int main(int nNumbersofArgs, char* pszArgs[])
{
cout.setf(cout.boolalpha);

int nArg1;
cout << "inout value 1: ";
cin >>nArg1;

int nArg2;
cout << "input value 2: ";
cin >> nArg2;

bool b;
b = nArg1 == nArg2;

cout << "the statement, " << nArg1
<< " equals " << nArg2
<< "is" << b
<< endl;
system("PAUSE");
return 0;
}

[zb0S216C]

A few pointers:

1) <cstdio> is a C-converted-to-C++ header. It has no place in your program.
2) <iostream> was included twice. One of the two lines need to go.
3) For system() to work, your program requires the <cstdlib> header.

_Wazzak

[Duthomhas]

It also sounds like you need to find yourself a better book. It isn't one of those awful Malik or 21 Days ones, is it? (I am curious what book it actually is, though.)

[umfan110]

ok so <csrdlib> things of that nature do what exactly. and the book is c++ for dummies. what book would you recommend for a beginner i like books that teach you have to build something massive but along the way it shows you what each part does. i dont know if you understand a word im saying but yeah if you could recommend a book for a beginner that be really cool. btw i know java script quite well.

thanks for the feedback

[Duthomhas]

The C++ for Dummies book makes some errors (sometimes egregious errors), and it is rather dated now, but is not that bad as a starter book. I don't personally recommend it though.

Grey Wolf makes some very good recommendations here
http://www.cplusplus.com/articles/GLzyhbRD/#CPP-Beg

[umfan110]

thanks for the lead yeah im reading alot of reviews on the books he recommends and they are amazing ill probably invest in one of those

thanks again