Question

Semester 2 & Trimester 3B, 2015 COMP1004 Engineering Programming Q2(b) Explain when you would use a chained "if" instead of a "switch-case" Show the logic of them by using pseudo code or a flowchart. 6 marks] Tove

Please answer the above queston (in terms of C programming) and explain answer

Answer 1

Chained If is used when the condition for the decision is a boolean expression. Switch - case is used on a single integer, enumerated value, or string object. But if we need to decide on the basis of some boolean expression and check on various condition, Chained If is always better.

for eg.

if we need to print the largest of the 3 numbers, we need to use if as follows: -

if(a > b && a > c) {

return a;

} else if(c > b && c > a) {

return c;

} else if(b > a && b > c) {

return b;

}

We cannot use switch in this case