Running a C/C++ programme on Linux

install GNU C/C++ compiler

sudo apt-get update
sudo apt-get install build-essential manpages-dev

verify installation

whereis gcc
which gcc
gcc --version

whereis g++
which g++
g++ --version

compiling C program

• helloWorld.c

#include<stdio.h>

int main(void)
{
 printf("Hello World !.\n");
 printf("This is 'C'. \n");
 return 0;
}

• compiling C program

cc helloWorld.c -o helloWorld

or make helloWorld or gcc helloWorld.c -o helloWorld

• running a C program

./helloWorld

compile & running cpp program on Linux

• helloWorld.cpp

#include <iostream>
using namespace std;
int main ()
{
  cout << "Hello World! ";
  cout << "\n";
  cout << "I'm a C++ program";
  cout << "\n";
  return 0;
}

• compile

g++ -o helloWorld helloWorld.cpp

or

make helloWorld

• run

./helloWorld

generating symbolic information for gdb and warning messages

cc -g -Wall helloWorld.c -o helloWorld

g++ -g -Wall helloWorld.c -o helloWorld

optimized code

cc -O helloWorld.c -o helloWorld

g++ -O helloWorld.c -o helloWorld

compiling a C program that uses math functions/Xlib graphics functions

link the library using -l option

cc myth1.c -o executable -lm

compile a program with multiple source files

cc light.c sky.c fireworks.c -o executable

g++ ac.c bc.c file3.c -o my-program-name