fatal error: iostream.h no such file or directory [duplicate]

Question

Possible Duplicate:
No such file iostream.h when including

Even after naming the source file with .cpp extension. my compiler gives this error, both in command prompt and Codeblocks. How can I fix this issue?

#include <iostream.h>   int main(){      cout<<"Hello World!\n";     return 0; } 

Answer 1

That header doesn't exist in standard C++. It was part of some pre-1990s compilers, but it is certainly not part of C++.

Use #include <iostream> instead. And all the library classes are in the std:: namespace, for ex­am­ple std::cout.

Also, throw away any book or notes that mention the thing you said.

Answer 2

Using standard C++ calling (note that you should use namespace std for cout or add using namespace std;)

#include <iostream>  int main() {     std::cout<<"Hello World!\n";     return 0; }