What is the difference between if else and switch case?

Question

please help.

Answer 1

If you're just using a single comparison for the conditional for each if-else if, and you have multiple else if clauses then a switch is probably the way to go. However, if you are only using 1 or maybe 2 else if clauses then I would probably just use it. Likewise if you're using multiple comparisons in your conditionals then you may need to stick with an if-else if clause.

This could easily be a switch:

if (x > 6)
//code
else if ( x < 4)
//code
else if ( x == 5)
//code
else if (x != 5)
//code
else
//default code

This might be better as an if-else if:

if (x > 6 || y > 6 && isNumber())
//code
else if ( x < 4 || y < 4 && isPositiveNumber())
//code
else if ( x == 5 || y == 5)
//code
else if (x != 5 && x != 5)
//code
else
//default code

Answer 2

Basically they have no difference. but the use of them does:
"if else" comes after "if" statement so you're kinda saying you want the first statement to be true. if it isn't, then check another condition and so on.
Switch is faster and better understandable in long term and bigger condition checks.

Answer 3

I have a tip for you, switch on an enum to make your code even more readable.