You can compile your code using "Run" button placed on top right of the header. You can also add custom input using the stdin box and your output is shown at output box.

You can change language, theme, font-size, tab-size, text-color and font-color from settings.

You can use save file icon to save your code onto the local system. The extension of the file is automatically selected on the basis programming language you chosen.

You can use upload file icon to upload your code from the local system. You can only select the files of selected language means can only select .c file for c language.