Quick Answer: What Is The Use Of LET And REM In Qbasic?

What is the use of REM statement?

Purpose: Provides a way to insert remarks (that will not be acted on) into a batch file.

During execution of a batch file, DOS will display (but not act on) comments which are entered on the line after the REM command.

You cannot use separators in the comment except the space, tab, and comma..

What is let command in Qbasic?

In QBASIC, the LET statement is used to assign a value to a variable. The PRINT command is used to display any message or value on the screen. The INPUT statement in QBASIC is used to accept the data item from the user.

What is the use of LET and input statement?

The LET statement can be used to assign a constant value to a variable name, a variable to a variable name, or the result of an expression to a variable name. The READ statement is used to pick up information for input from external sources.

What is the difference between if/then and if/then else statement?

“if/then” lets you test a condition and provide instructions for when the test is true. “if/else” lets you test a condition and provide instructions for when the test is true AND when it is false.

Why are loops used?

Almost all the programming languages provide a concept called loop, which helps in executing one or more statements up to a desired number of times. All high-level programming languages provide various forms of loops, which can be used to execute one or more statements repeatedly.

Why should we use CLS statement?

The CLS statement clears the screen. If you write CLS statement in the middle of the program then you cannot see the outputs generated before execution of CLS because it clears the screen.

What does the Q in QBasic stand for?

Quick Beginners All Purpose Symbolic Instruction CodeThe name QBasic is an acronym for Quick Beginners All Purpose Symbolic Instruction Code. It was developed and launched by Microsoft in the year 1991 and is considered to be one of the most ideal languages for absolute beginners. It was intended as a replacement for GW-BASIC.

How do I write a QBasic program?

To begin, write down everything from the program below (“PRINT “Hello World”) into a text editor or into the QBasic IDE (Integrated Development Interface) itself and save it as “1HELLO. BAS”. Next open the file in QBasic (unless you used QBasic IDE in which case it is already open) and press F5.

What is the difference between the REM and CLS statement?

It clears the previous output from the display screen and makes the screen blank. 2. REM or Remarks is non-executable statement where single quotation(‘) is used. …

What is the full form of REM in Qbasic?

REM stands for REMark. You can use the REM statement to put comments in you program that tell anyone listing the program what is happening at a specific point. (

What is difference between constant and variable?

What is the Difference between Constant and Variables? A constant does not change its value over time. A variable, on the other hand, changes its value dependent on the equation. … Constants usually represent the known values in an equation, expression or in line of programming.

What is the use of read data statement?

A READ statement must always be used with a DATA statement. READ statements assign variables to DATA statement values on a one-to-one basis. READ statement variables may be numeric or string, and the values read must agree with the variable types specified. If they do not agree, a “Syntax error” results.

What is the use of PSET statement in QBasic?

The SCREEN statement starts up the graphics hardware so that now other graphics statements can be done. Column and row can be numbers or variables. The part of the statement (column, row) says where on the graphics screen to set the pixel.

What Is REM command?

The REM command lets you place a remark or comment in a batch file. Batch file comments are useful for documenting the purpose of a batch file and the procedures you have used.

What happens when the computer encounters an input statement?

If you use an INPUT PROMPT or LINE INPUT PROMPT statement, the prompt is printed at the text cursor, and the text cursor is moved to the right of the prompt string.