Unbuntu installation Eclipse write C program appears launch failed. Binary not found

Problem: Use eclipse C/C + + version on Ubuntu16, run write the correct HelloWorld program, always appear launch failed at run time. Binary not found problem.

Scenario: If you're a novice, then make sure you compile it, refer to the Java runtime to compile the bytecode and then convert the bytecode into a code that the machine can execute on the virtual machine. So what about C. Precompile first, then compile, then link, and finally execute. If you run the code directly, it must be wrong. So using eclipse must be precompiled, compiled, linked, and finally executed. If all of these prerequisites are OK, then look at the environment configuration.