Hello World in C ++ does not compile

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#1 by (5 votes)

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I'm reading the book "Training in C ++ Language", but this teaching everything error. The hello world of the book simply does not compile:

#include <iostream.h>
void main() {
cout << "Primeiro Programa";
}

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c++ sintaxe

asked by anonymous 11.12.2014 / 23:24

1 answer

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score 5 · Accepted Answer

If the book is really bad, throw it away and look for a better one.

You have some problems in this code

In C ++ the include files do not have the suffix .h as in C. It is the statement of cout .
Function definitions must have parentheses after their name.
The return of the main() function must be an integer.
cout needs your full name, that is, std::cout .

So it compiles:

#include <iostream>

int main() {
    std::cout << "Primeiro Programa";
}

A variation used when the program starts to become more complex (not that it compensates in this case, only to show something very used):

#include <iostream>
using std;

int main() {
    cout << "Primeiro Programa";
}