Fundamentals and Solutions. Together!
This is the first time I actually start to program.
I´m going to make a program that, when it runs, it will say “Hello world”.
This is the code I made on XCode.
Once it runs the program will be show here:
And finally this is how it looks:
TC101
WSQ02
first program in c++
código:
#include <iostream>
int main()
{
std::cout << "Hello World!";
} 
So now for the class of Ken, I will show how to print Hello World in python, it´s actually pretty easy in python.
first we will open our IDLE and go to the tab on the upper-left corner where it says File and then go to New File(or you can just press Ctrl+N), this is where we will code all of our programs.
after that we can put print(“Hello World”) and it should look like this:
And press Run(again, in the upper-left corner) and watch the magic of absolutely nothing any computer can´t do! coungratulations!!! 😀
How this works is that the word “print” prints things on the shell(duhh). After the word print you must open a parenthesis and then
a) if you want to print something consistently, put it inside comillas(” “)
b) if you want to print a variable, just put the name of the variable without comillas, for example
(the first is the last print, I was too lazy to erase it xD)
c) if you want to print a text AND variables, just separate them with a comma.
And now you know how to use print in python 😀 go rock the world!
#WSQ02
After watching Ken’s video on youtube “LINK” about Hello World on C++
I decided to work with my program following his directions, once I did this, it didn’t work for about a day, after this happened I came to school hopping for the best; special thanks to Christian Moreno for helping me out, he told me to download cygwin again and install many components I didn’t have. He said: “Descargalo otra vez, y si no checo tu programa” well the program was correct but the components weren’t.
This was the code for Hello World, Christian continued coaching me while we tried to make it work, succesfully he told me that I had compiled correctly; in order to compile you must write “g++” and the name of your program , and that in order to make it work you should always put “./a.exe” in order to execute the program compiled before.
Finally, after re-downloading cygwin, I was able to run this easy program… Hello World
Banana for scale!!
Primero Tenemos que escribir nuetsro programa en el editor que escogiste, en mi caso Atom. Aqui el Codigo que yo utilizo.
#include <iostream>
using std::cout;
int main()
{
cout << “Hello World”;
return 0;
}
Tienes que guardarlo en con formato .cpp C:CygwinHomeusername
Despues abres Cygwin y escribes “ls”, en ese momento te mostrará los archivos que tengas en C:CygwinHomeusername
Lo siguiente que tienes que escribir es “g++ (El nombre exacto de tu archivo)”
tendrás que esperar un poco.
Lo último que tienes que escribir es “./a.exe” y tu programa correra.
After setting up my computer, I had the task of writing the basic code of “Hello World” in C++. The last time I wrote a code in C++ was when I was in high school so there were things that I didn’t remember at all. I had to search the basic commands for C++ and learn them again. After few minutes of writing, my code worked.
Alex H.
Lo que yo hice en esta practica fue imprimir un mensaje (“Hello World”), la única dificultad que tuve con esto fue que al momento de quererlo ejecutar lo escribía de manera errónea pero al final encontré la manera de solucionar ese detalle.
Open up emacs and press “control x control f”. This write the name of your program and press enter. I found a really good video about getting use to emacs. Tutorial. Another great page that helped me a lot was this one. C++.
Once you have created your program, go to terminal and press ls. press “cd”and then write the location where you saved your program.
As you can see, after you have located your file, write g++, the name of your program and press enter.
Then write ./a.out, the name of your program and press enter.
In the last image you will notice that the program ran perfectly and printed out “Hello World! I’m a c++ program”. In case your wondering what it looks like when there is an error in your program here is another picture.
For this WSQ I had problems running my code. My problem was that I used my code file like a directory, also my username "Héctor" caused me trouble because of the accent on the letter "e". The only thing the code does is printing "Hello World".
