compiling c++ program using gcc

Question

#include<fstream>

using namespace std;
int 
main()
{
char name[30];
int marks;
ofstream fout("student.out");

cout<<"Enter name";
cin>>name;
cout<<"Enter marks secured:";
cin>>marks;

fout<<name<<endl;
fout<<marks<<endl;

return 0;
}

please help me compile the above program using gcc . When i compile this program i get the following errors.

stdfile.cpp: In function 'int main()':
stdfile.cpp:12:1: error: 'cout' was not declared in this scope
stdfile.cpp:13:1: error: 'cin' was not declared in this scope

why are you using gcc and not g++?

David Brown
– David Brown

2012-01-22 07:14:04 +00:00
Commented Jan 22, 2012 at 7:14 — David Brown
– David Brown, Commented Jan 22, 2012 at 7:14

Mat · Accepted Answer · 2012-01-22 07:16:19Z

8

std::cin and std::cout are in <iostream>. Please include that, and compile your C++ code with g++, not gcc - otherwise you'll get all sorts of linking issues.

answered Jan 22, 2012 at 7:16

Mat

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Comments

René Nyffenegger · Accepted Answer · 2012-01-22 07:15:53Z

4

You need to

#include <iostream>

as well.

Also, compile the file with g++ instead of gcc.

answered Jan 22, 2012 at 7:15

René Nyffenegger

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Comments

mhsekhavat · Accepted Answer · 2012-01-22 07:41:47Z

0

if you want to compile with gcc, you should use printf instead of cout, scanf instead of cin and fprintf instead of fout.

answered Jan 22, 2012 at 7:41

mhsekhavat

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1 Comment

Flexo - Save the data dump Over a year ago

gcc can quite happily compile C++ code, it just needs to be correct C++ code and it will need more explicit instructions with linking it

ddacot · Accepted Answer · 2012-01-22 07:46:19Z

0

cout, cin etc. take part from library. You must include it to get the program work

answered Jan 22, 2012 at 7:46

ddacot

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