What are the three control structures in programming and how are they used?
Question
What are the three control structures in programming and how are they used?
Solution
The three control structures in programming are sequence, selection, and iteration.
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Sequence: This is the default control structure. Instructions are executed one after another. They might, for example, move values between memory and registers, or they might perform arithmetic on values. In a sequence structure, an action, or event, happens in order after the previous one has been completed.
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Selection: This control structure allows one set of instructions to be executed if a logical condition is true and another set of instructions to be executed if the logical condition is false. The most common selection structures are if-then-else and switch statements.
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Iteration: This control structure repeatedly executes a block of code. There are several types of loops, including for, while, and do-while. The loop continues to execute until a specified condition is met.
These control structures can be combined in various ways to create more complex behaviors in a program.
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