iostream.h Header File Not Supporting in Dev C++ Windows 64bit x64 [solved]_How To Do C++ Programming in Dev C++

Hi Friends, I'm Sujoy from India. And I'm back with another technology article for you. 
Today I'll tell you about how to do C programming and C++ programming on your Windows x64 PC or laptop. Lots of users ask me what is the best C++ compiler and IDE for Windows 8 64bit and Windows 7 64bit computer/laptop/pc? We all loved the Borland Turbo C++ IDE on our older 32bit Pentium or Celeron PCs/laptops running Windows XP; and many of us learned programming using the Borland Turbo C++. But Borland Turbo C++ is not officially available for 64bit versions of Windows 7 or Windows 8. However you can run older Borland Turbo C++ v3.0 using DOSBox on Windows 7 and 8.

But the problem is, the compiler itself is 16 bit, which runs virtually under DOSBox. And being a 16bit compiler, after compiling a program, the executable file which it produces (Windows .exe file) is itself 16bit. So you can't run the .exe file individually as standalone executable file on Windows 64bit computer. You've to generate the .exe file by compiling the original .cpp source-code every time from inside the DOSBox Turbo C++ to run them. And if you want to distribute your programs to your friend/colleague, he/she has to do the same in order to run them if they are on a 64bit machine.

Also the older Borland Turbo C++ v3.0 provides you with an older no graphical type of interface. Where everything runs slow and copy-pasting is difficult and managing large source-codes are tough. And you can't have a program name more than 8 characters!

So, as you can see, this solution is not optimal. So we've to move to a modern Compiler & IDE. And you can make 64bit codes supporting dynamic programming which can use all the capabilities of your modern 64bit processor. I'd suggest using Dev C++.  In that you can choose compiler version- 32bit or 64bit.

But there’s one problem with Dev C++.  That I'll tell you how to solve.

Problem Description:

In older Borland Turbo C++ IDE, we could directly write a simple 'Hello World' C++ program like below-

#include<iostream.h>

#include<conio.h>

int main()

{

cout<<"Hello World";

getch();

return 0;

}

But when I tried the same code in Dev C++, I got the following error- 1  21           C:\Users\Sujoy Krishna Das\Documents\Dev C++\Hello World.cpp [Error] iostream.h: No such file or directory  - compilation terminated.

The problem seems with the iostream.h header file, Dev C++ can't recognize it. And without the iostream.h header file, we can't do C++ programming. How did I fix it? Read below.

Problem Solution-

You need to do little modification in the code to run it on Dev C++. I used the Dev C++ v5.8.3. The updated code is below.

#include<iostream>

#include<conio.h>

using namespace std;

int main()

{

cout<<"Hello World";

getch();

return 0;

}

And it ran successfully!

Explanation-
What changes did I do? Dev C++ supports newer ANSI C++.  That has gone through many changes. In older style compiler IDE like Borland Turbo C++, you could use the <iostream.h> header file, now you've to use the ANSI C++ version-  <iostream> only. And another is using namespace std; . Where using & namespace are the two keywords of ANSI C++ and std is the namespace where ANSI C++ standard class libraries are defined.

In short, you have to write #include<iostream> and using namespace std; at the beginning of every program in Dev C++. That's it! Now you can make programs of your choice! I hope you've liked my article!

ONE ANNOUNCEMENT!

====================
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