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“学越千山：C语言程序设计练习题（三）”，

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Learning to Cross a Thousand Mountains: C Language Programming Exercise Question (3),

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思维导图

Mind mapping

While 语句

While statement

一般形式：

注意：while语句是一种入口条件循环,也就是说,在执行多次循环之前已决定是否执行循环。do-while语句至少执行一次。

Note: The while statement is an entry condition loop, which means that the decision whether to execute the loop has been made before executing multiple loops. Execute the do while statement at least once.

练习

Practice

解题思路

Train of thought

1、使用循环结构判断位数，Num每次循环都除以10，除一次计数器加1；

2、运用求余的思想求出每一位数字。

1. Use a loop structure to determine the number of digits. Num is divided by 10 for each loop, and the counter is added by 1 for each division;

2. Use the idea of finding remainder to find each digit.

调试程序

Debugger

（1）fabs浮点数的绝对值，

abs整数的绝对值。

（1）The absolute value of the fabs floating point number,

The absolute value of an ABS integer.

运行结果

Running results

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参考资料：百度翻译，C语言程序设计第4版（苏小红等）

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