What is the difference between IF-ELSE and SWITCH?

Question

Can someone please explain this to me?

Answer 1

The difference between Switch and if-else statement is below:

This is the general syntax of if-else ladder:

if (condition1) { //Body of if }
    else if (condition2) { //Body of if }
    else if (condition3) { //Body of if }
else { //default if all conditions return false }

And this is the general syntax for switch:

switch ( variable )
{
 case : //Do Something
                                             break;
 case ://Do Something
                                             break;
 default: //Do Something
                break;
}

The if-else ladder is of type strict condition check, while switch is of type jump value catching.

Advantages of switch over if-else ladder:

• A switch statement works much faster than equivalent if-else ladder. It is because compiler generates a jump table for a switch during compilation. Consequently, during execution, instead of checking which case is satisfied, it only decides which case has to be executed.
• It is more readable and in compare to if-else statements.