Selection Construct
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Selection Constructs are an essential part of programming that allow decisions to be made within a program. They enable the computer to choose which set of instructions to execute based on certain conditions. Without selection, a program would simply follow instructions in a straight line, making it less flexible and intelligent.
There are four main types of selection constructs:
a) IF…THEN…ENDIF (One-way): This structure executes a block of code only if a specific condition is true. If the condition is false, the program simply skips that block and continues.
b) IF…THEN…ELSE…ENDIF (Two-way): This allows two possible outcomes. If the condition is true, one block of code runs; if it’s false, another block runs instead.
c) IF…THEN…ELSEIF…ELSE…ENDIF (Multiple-way): This structure is used when more than two conditions need to be checked. The program tests each condition in order until one is true.
d) CASEOF…OTHERWISE…ENDCASE (Limited options): This construct is ideal when there are several possible values for a single variable. Each value leads to a different set of instructions.
These selection constructs make programs dynamic, logical, and capable of handling real-world decision-making efficiently.
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