Unit 6 – Assignment 1 (P2, P3 and P4) Software Design and Development P2 Look at factors influencing the choice of programming language P3 Explain sequence, selection and iteration as used in computer Programming P4 Data Types Recap

Data Types Integer Date Single Using these clues, name some types of data types? Integer Age Date DOB Single Height

Now Given the following scenarios write down the name of the variables, state the data types and reasons for choice Discuss in pairs the following (1 min) Turn a light on or off Total of the shoe order Current time Calendar date for appointment The length of an Olympic pool User password

Factors AFFECTING CHOICE OF PROGRAMMING LANGUAGE Organisational Policy Large organisations have a policy as to what hardware and software is to be used Different manufacturers taken into account Suitability in terms of features and tools Will it work on the hardware platform Does it have appropriate features – Windows programming is supported by languages such as VB Availability of trained staff Programmers may be trained in a particular language Reliability Features built into the language – find out about Ada and its uses Development and maintenance costs Some languages can cut the development costs Expandability Some software may have to support hundreds of users and some languages expand in scale better than others

Some languages to research regarding their uses and features to help with P2 VB and VBA FORTRON COBOL PYTHON PASCAL JAVA C++ PROLOG