Question

Im using net-beans 7.2 if i run helloworld.cpp its showing error that cannot find include file (IDE cannot able to recognize any .h files ). i installed gcc, im useing Fedora 16, im trying to use CUDA plugin.

#include <cuda_runtime.h>
#include <cutil.h>
# include <iostream.h>

int main(int argc, char **argv)
{
    prithf("Hii");
    return 0;
}

Hope someone help me.

Answer 1

In C++, you usually dont use the .h extension for header files. For C++ header files, directly use the filename which in this case would be

#include<iostream>

Using iostream.h is deprecated.

Also write

using namespace std;

preferably after decalring all header files to import all symbols in the standard namespace into your code. That way, you wont have to write std:: everytime you want to use one. If you’re not getting what im talking about, please refer this link – http://www.cplusplus.com/doc/tutorial/namespaces/. Understanding this is important.

For your usual C header files, usually you have to prefix a ‘c’ before the filename and remove the .h extension. For example,

#include<math.h>

becomes

#include<cmath>