Sequence, one of the three basic logic structures is the order that the program runs the code so that it functions properly. It means that the program will function in a specific order , for example a variable must be defined before it is used or the computer wont recognise it and wont register it.
An integrated development environment (IDE) is software used to test the program that the person is writing to make sure it works. An IDE can include debuggers, diagnostic programs, cross referencers…