Скачать или смотреть Understanding GOTO in QBASIC: A Selection Structure Approach[p-5.1]

#QBASIC, #GOTO, #SelectionStructure, #ProgrammingBasics, #LogicBuilding, #CodingForBeginners, #StructuredProgramming

The 'GOTO statement in QBASIC' is used as a selection structure that transfers the program’s control to a specific line number or label. It helps in decision-making by jumping to different parts of the code based on conditions. Though powerful, it should be used carefully to avoid creating confusing or unstructured programs.
Example 1:
CLS
INPUT "Enter a number: ", N
IF N MOD 2 = 0 THEN
GOTO Even
ELSE
GOTO Odd
END IF
Even:
PRINT "The number is Even."
END
Odd:
PRINT "The number is Odd."
END

Example 2:
CLS
PRINT "1. Add Numbers"
PRINT "2. Subtract Numbers"
INPUT "Enter your choice: ", C

IF C = 1 THEN
GOTO Add
ELSEIF C = 2 THEN
GOTO Subtract
ELSE
GOTO Invalid
END IF

Add:
INPUT "Enter two numbers: ", A, B
PRINT "Sum = "; A + B
END

Subtract:
INPUT "Enter two numbers: ", A, B
PRINT "Difference = "; A - B
END

Invalid:
PRINT "Invalid Choice!"
END