HW 4: "Hello World" Code

Code:

#include <iostream>

using namespace std;

int main() {

    cout<<"Hello World!"<<endl;

return 0;

}

Line-by-Line Function:

#include <iostream>    //This and the following line allow the program to access external information such as commands for use within the file.

using namespace std;    //See above

int main() {    //Begins and initializes the function that will run the primary program.

    cout<<"Hello World!"<<endl;    //Prints the exact characters "Hello World!" and then ends the line, moving to a new one.

return 0;    //This and the following line end the "main()" function by returning a null value.

}    //See above

Compiling and running the program in the Linux Terminal:

[cms-opendata@localhost src]$ g++ -Wall main.cpp -o main    //Compiling

[cms-opendata@localhost src]$ ./main                                     //Running

Hello World!                                                                             //Code output