initial question

the iostream.h did exist in the directory, but i can't include it
i use vc6
please help me

Code:

// aaa.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "iostream.h"
int main(int argc, char* argv[])
{
	printf("Hello World!\n");
	return 0;
}

Deleting intermediate files and output files for project 'aaa - Win32 Debug'.
--------------------Configuration: aaa - Win32 Debug--------------------
Compiling...
StdAfx.cpp
Compiling...
aaa.cpp
c:\vc6.0_mini\microsoft visual studio\vc98\include\iostream.h(52) : fatal error C1083: Cannot open include file: 'ios.h': No such file or directory
Error executing cl.exe.

aaa.exe - 1 error(s), 0 warning(s)

Perhaps try:

Code:

#include <iostream>
int main(int argc, char* argv[])
{
	std::cout << "Hello World!\n";
	return 0;
}

iostream.h is a deceprecated header file. It works on much older compilers ( like Turbo C++ ) but more standard compliant ones will issue a warning a least if you attempt to use it

it did't work either

the directory is corrent
i try #include <malloc> it is an error
Cannot open include file: 'malloc': No such..
but #include "malloc.h" is ok

i doubt is the setting..
how to set the "c/c++" tab

Originally Posted by swgh

iostream.h is a deceprecated header file.

Not deprecated...
Deprecated functions or header files are still supported by the standard but not recomended for usage...

iostream.h is not supported by the standard

i look for msdn the "c1083 error" and i exclude the 1 to 6 reasons
but the "maybe" reason 7 and 8 i don't know what it mean

i look for msdn the "c1083 error" and i exclude the 1 to 6 reasons
but the "maybe" reason 7 and 8 i don't know what it mean

What was reason 7 and 8? Malloc is an old C function that deals with memory allocation if I remember when I used to code in C. But if you are using C++, you would use the new and delete keywords when dealing with allocations using pointers

Originally Posted by peachchentao

the iostream.h did exist in the directory, but i can't include it
i use vc6
please help me

Code:

// aaa.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "iostream.h"
int main(int argc, char* argv[])
{
	printf("Hello World!\n");
	return 0;
}

Deleting intermediate files and output files for project 'aaa - Win32 Debug'.
--------------------Configuration: aaa - Win32 Debug--------------------
Compiling...
StdAfx.cpp
Compiling...
aaa.cpp
c:\vc6.0_mini\microsoft visual studio\vc98\include\iostream.h(52) : fatal error C1083: Cannot open include file: 'ios.h': No such file or directory
Error executing cl.exe.

aaa.exe - 1 error(s), 0 warning(s)

Is there a reason you are using double quotes? If not try #include <iostream.h>
Also printf is in "stdio".
So maybe,

Code:

#include "stdafx.h"
#include <stdio.h>
int main(int argc, char* argv[])
{
	printf("Hello World!\n");
	return 0;
}