What is the purpose of the switch statement?

In computer programming languages, a switch statement is a type of selection control mechanism used to allow the value of a variable or expression to change the control flow of program execution via search and map.

What is machine code a level?

Machine language, or machine code, is a low-level language comprised of binary digits (ones and zeros). Every program, video, image, and character of text is represented in binary. This binary data, or machine code, is processed as input by the CPU.

What is a switch statement in C programming?

A switch statement allows a variable to be tested for equality against a list of values. Each value is called a case, and the variable being switched on is checked for each switch case.

What is the purpose of switch statement in Java?

The switch statement is a multi-way branch statement. It provides an easy way to dispatch execution to different parts of code based on the value of the expression. Basically, the expression can be byte, short, char, and int primitive data types.

What are the advantages of switch case statements over nested if else structure?

Some key advantages of switch over if-else ladder: It’s because the compiler generates a jump table for a switch during compilation. As a result, during execution, instead of checking which case is satisfied, it only decides which case has to be executed. It’s more readable compared to if-else statements.

Is machine code high or low level?

In computer programming, machine code is any low-level programming language, consisting of machine language instructions, which is used to control a computer’s central processing unit (CPU).

Why is machine level coding difficult?

Machine code is the only language a computer can process directly without a previous transformation. Furthermore, it requires memorizing or looking up numerical codes for every instruction, and is extremely difficult to modify. True machine code is a stream of raw, usually binary, data.

How does a switch case work?

A switch works with the byte , short , char , and int primitive data types. A statement in the switch block can be labeled with one or more case or default labels. The switch statement evaluates its expression, then executes all statements that follow the matching case label.

What is the purpose of statement object?

A Statement object is used to execute a simple SQL statement with no parameters. A PreparedStatement object is used to execute a pre-compiled SQL statement with or without IN parameters. A CallableStatement object is used to execute a call to a database stored procedure.