How Do You Troubleshoot the C Compile-Time Error “gcc: error trying to exec ‘cc1plus’: execvp: No such file or directory”

Problem scenario
You run gcc to compile a C program, but you get this error:
"gcc: error trying to exec 'cc1plus': execvp: No such file or directory"

Solution
Install a C compiler.  If you do not know how, see this posting.