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6-7 Other Statements Related to Looping

Three other C statements are related to loops: break, Three other C statements are related to loops: break, continue, and goto. The last statements, the goto, is continue, and goto. The last statements, the goto, is not valid for structured programs and therefore is not not valid for structured programs and therefore is not discussed in this text.discussed in this text.

breakcontinue

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FIGURE 6-20 break and Inner Loops

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PROGRAM 6-16 The for and while as Perpetual Loops

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PROGRAM 6-17 Using a break Flag

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FIGURE 6-21 The continue Statement

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PROGRAM 6-18 continue Example

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6-8 Looping Applications

In this section, we examine four common applications In this section, we examine four common applications for loops: summation, product, smallest and largest, and for loops: summation, product, smallest and largest, and inquiries. Although the uses for loops are virtually inquiries. Although the uses for loops are virtually endless, these problems illustrate many common endless, these problems illustrate many common applications.applications.

SummationPowersSmallest and LargestInquiries

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FIGURE 6-22 Summation and Product Loops

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PROGRAM 6-19 Sum to EOF Function

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PROGRAM 6-19 Sum to EOF Function

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PROGRAM 6-20 Powers Function

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PROGRAM 6-20 Powers Function

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To find the sum of a series, the result is initialized to 0;to find the product of a series, the result is initialized to 1.

NoteNote

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FIGURE 6-23 Smallest and Largest Loops

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PROGRAM 6-21 Smallest to EOF Function

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PROGRAM 6-21 Smallest to EOF Function

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To find the largest, we need to initialize the smallest variable to a very small number, such as INT_MIN.

To find the smallest, we need to initialize the result to a very large number, such as INT_MAX.

NoteNote

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FIGURE 6-24 any and all Inquiries

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PROGRAM 6-22 anyPositive to EOF Function

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PROGRAM 6-22 anyPositive to EOF Function

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PROGRAM 6-23 All Positive Function

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PROGRAM 6-22 anyPositive to EOF Function