CS50 IDE is like the CS50 Sandbox, but with more features. It is an online development environment, with a code editor and a terminal window, but also tools for debugging and collaborating:
Once we log in, we’ll see a workspace that looks similar to that of CS50 Sandbox, but now our workspace will be saved to our account.
We can create a new file with File > New File (or the green plus sign), and use File > Save to save it as hello.c in the folder ~/workspace/. Now we’ll write our simple program:
#include <stdio.h>
int main(void)
{
printf("hello, world\\n");
}
- And we’ll need to manually save, with File > Save or the keyboard shortcut.
Now, in the terminal window below, we can type make hello and ./hello to see our program run.
The folder icon at the top left will show us all our files in a directory (folder) called ~/workspace/, and we can create folders and files inside. The ~ symbol refers to our home directory in this environment, which is just the set of all the files related to our account, and workspace is a folder inside ~ that we can use. (The ~ directory also has other configuration files for our account, but we won’t need to worry about them.)
In the terminal, we see ~/workspace/ $ . The $ part of the prompt is the same as before, after which we can type a command, but the first part of the prompt tells us the directory our terminal is in. For example, we can type ls, and we’ll see a textual version of the workspace directory. And ./hello refers to a file called hello in ., which is the current folder.
We can change our directory with cd, and if we type something like cd src3 (assuming we have a folder already named src3), we’ll see our prompt change to ~/workspace/src3/ $ .
We can delete files and folders with the graphical file tree, right-clicking them as we might be familiar with already. But we can do the same in the command line, with rm hello, which will remove files. The command will ask us for a confirmation, and we can type yes or y (or n, if we’ve changed our minds).
We can create directories with mkdir test, and rmdir to remove them.
