LinuxQuestions.org - [SOLVED] ERROR: iostream.h: No such file or directory...‘cin’ was not declared in this scope

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ERROR: iostream.h: No such file or directory...‘cin’ was not declared in this scope

I create a simple code for add two number:

Code:

#include<iostream.h>

#include<stdio.h>



main()

{

int num1, num2, sum;

cout<< "input the first number: ";

cin>> num1;

cout<< "input the second number: ";

cin>> num2;

sum= num1+num2;

cout<< "The result is: ";

cout<< sum;

}

But when I compile the code:

Code:

$ c++ sum.c

The console shows the next error:

Quote:

suma.c:1:21: error: iostream.h: No such file or directory
suma.c:3:18: error: stlib.h: No such file or directory
suma.c: In function ‘int main()’:
suma.c:8: error: ‘cout’ was not declared in this scope
suma.c:9: error: ‘cin’ was not declared in this scope

I search the answer to my problem in various forums but I can't solve the problem.
I think that is due to I need some package or that I don't install the necessary libraries.

Thanks,

Hi -

"iostream.h" is an anachronism.

Modern C++ programs should use "#include <iostream>" instead.

Here's an example:

Code:

#include <iostream>

 

using namespace std;

 

int 

main(int argc, char* argv[])

{

  cout << "Hello world" << endl;

  return 0;

}

'Hope that helps .. PSM

PS:
Of course, maybe you just didn't install the complete development package.

For Redhat or Centos, for example, you'd run something like:

Quote:

yum install gcc gcc-c++ make autoconf automake gawk binutils

for Ubuntu, an equivalent command might be:

Quote:

sudo aptitude install build-essential