“Unresolved inclusion” error with Eclipse CDT for C standard library headers

Question

I set up CDT for eclipse and wrote a simple hello world C program:

#include 

int main(void){
    puts(\"Hello, world.\");
    return 0;
}


        

Answer 1

Go to Project > Properties > C/C++ General > Preprocessor Includes > Providers and select both:

• "CDT GCC Built-in Compiler Settings"
• "CDT CROSS GCC Built-in Compiler Settings"

For each one of those also select the sub-entry: "Use global provider shared between projects".

Tested on Eclipse 4.8.0 in Ubuntu 16.04 with a C and a C++ hello world.

Answer 2

• Select File>>New Project
• In the Project Wizard, select C/C++>> C++ Project
• In "Project type" section, select "Makefile Project>> Hello world C++ Project"
• In "Toolchains" section, select "Linux GCC"

It can solve the problem. (Excuse me for bad English)