Problem scenario
You try to compile a program with “gcc nameofprog.cc”.  You get this output: “foobar.cc.:55:error: expected ‘;’ before string constant”

What do you do to compile your program?

Solution
Go to line 55 of foobar.cc.  If there is a printf command, be sure that the thing to be printed is surrounded by parentheses.  Here is an example of a line that will cause the problem:
   printf “This is a test”;

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Continue reading “How Do You Troubleshoot the C Program Error “error: expected ‘;’ before string constant”?”

Problem scenario
You try to compile a program with “gcc nameofprog.cc”.  You get this output:

“warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]”

What do you do to compile your program?

Solution
The program may still compile and run.  Look for the a.out file to be created.  It may be a working C program.  Just run it like this:  ./a.out

To get rid of the error,

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Continue reading “How Do You Troubleshoot the C Program Error “warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]”?”

Problem scenario
You want to program in the C programming language on a Linux server.  How do you code in C and test your programs?

Solution
Overview
Install the C compiler.

Procedures
1.  To find your distribution of Linux run this command:  cat /etc/*-release | grep -i pretty

2.  Find the one option of the below three that applies to your Linux:

• For a Red Hat distribution (e.g.,

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Problem scenario
You want to install Boost C++ libraries and related development files.  How do you do this?

Solution
Run this command:
sudo apt-get install automake bison flex g++ git libboost1.*-all-dev libevent-dev libssl-dev libtool make pkg-config

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Problem scenario
You want to see how C++ works.  You want to read in user input from the keyboard and have the C++ program run a bash command.  How do you do this?

Solution
Compile this code (e.g., as a file named “test.cpp” with “g++ test.cpp”) and run it (e.g., ./a.out):

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
using namespace std;

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Continue reading “How Do You Read in Keyboard Input from a User and Invoke a Unix Shell Command with a C++ Program?”

Problem scenario
You want to install a C++ compiler in Ubuntu.  You want to write a basic C++ program and run it.  How do you do these things?

Solution
1. As root, install a C++ compiler with this command:

apt install g++

2. Create a basic program.  Here is an example.  Name this file hello.cpp and put this as the content:

#include <iostream>

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Continue reading “Using Ubuntu, How Do You Install a C++ Compiler and Run a Basic C++ Program?”