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what is a control statement 开始学习
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Statements that provide capabilities such as selecting among alternative control flow paths or causing the repeated execution of certain collection of statements
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what are selection statments 开始学习
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[1] Selection statements: choose between two or more execution paths in a program. [2] Two-way selection statements: select one of two execution paths [3] Multiple-selection statements: select one of many execution paths,
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give an example of Two-way selection statements 开始学习
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give an example of Multiple-selection statements: 开始学习
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what are Iterative Statements 开始学习
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[1] Mechanism for the repeated execution of a statement or a compound statement. [2] It is implemented either by various loops (iteration) or recursion
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whata re the 2 forms of Logically-Controlled Loops 开始学习
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开始学习
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Pre-test: Loop condition is tested before execution of loop body. In most languages: while loop. Pascal: while ... do.
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开始学习
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Post-test: loop body is executed before condition is tested. Loop body is executed at least one time. Normally: do ... while. In Pascal: repeat ... until.
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what is Unconditional Branching 开始学习
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statements that change control follow without any condition
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give some examples of unconditional branching statmens 开始学习
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break, continue, and return.
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开始学习
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break provides unconditional exits from loops.
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开始学习
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continue skips the remainder of the current iteration, but does not exit the loop.
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开始学习
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return terminates function/method calls.
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what does an Unlabelled break break do 开始学习
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An unlabelled break statement terminates switch, for, while, or do-while statement. It terminates the innermost of such statements when they are nested.
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What does a labled break do? 开始学习
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A labeled break terminates an labelled statement and control flow is transferred to the statement immediately following the labelled (terminated) control statement.
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