IF...ELSE
In The process of writing computer software., A decision within a computer program when the program decides to move on based on the results of an event. is usually represented by the The smallest element of a programming language which expresses an action to be carried out.IF and ELSE:
- IF represents the question
- ELSE points to what to do if the answer to the question is false
For example, this simple A sequence of logical instructions for carrying out a task. In computing, algorithms are needed to design computer programs. prints out a different message depending on how old you are. Using IF and ELSE, the steps are:
- Ask how old you are
- IF you are 70 or older, say “You are aged to perfection!”
- ELSE say “You are a spring chicken!”
If this algorithm is tried using 75 as our age, the answer to the question at step 2 is true, so the algorithm tells us to say “You are aged to perfection!”
If the algorithm is tried using 15 as our age, the answer to the question at step 2 is false, so the algorithm tells us to say “You are a spring chicken!”
Two different paths are followed according to the answer given to a particular question. The flow diagram to illustrate this algorithm is:
