“While loops”的版本间的差异
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（以“The do loop works in the same manner as the while loop, with the exception that the condition is tested at the end of the loop, so the do loop will always run at lea...”为内容创建页面） |
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| + | <font color="orange" size="+1">'''描述'''</font> | ||
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| + | while loops will loop continuously, and infinitely, until the expression inside the parenthesis, () becomes false. Something must change the tested variable, or the while loop will never exit. This could be in your code, such as an incremented variable, or an external condition, such as testing a sensor. | ||
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| + | <font color="orange" size="+1">'''语法'''</font> | ||
<pre style="color:dimgray"> | <pre style="color:dimgray"> | ||
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| − | { | + | while(expression){ |
| − | + | // statement(s) | |
| − | + | } | |
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</pre> | </pre> | ||
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| + | <font color="orange" size="+1">'''参数'''</font> | ||
| + | |||
| + | expression - a (boolean) C statement that evaluates to true or false | ||
<font color="orange" size="+1">'''示例'''</font> | <font color="orange" size="+1">'''示例'''</font> | ||
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| + | All of the following are valid declarations for Strings. | ||
<pre style="color:dimgray"> | <pre style="color:dimgray"> | ||
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| − | |||
| − | + | var = 0; | |
| + | while(var < 200){ | ||
| + | // do something repetitive 200 times | ||
| + | var++; | ||
| + | } | ||
</pre> | </pre> | ||
| + | |} | ||
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2015年7月31日 (五) 20:11的版本
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描述 while loops will loop continuously, and infinitely, until the expression inside the parenthesis, () becomes false. Something must change the tested variable, or the while loop will never exit. This could be in your code, such as an incremented variable, or an external condition, such as testing a sensor.
语法
while(expression){
// statement(s)
}
参数 expression - a (boolean) C statement that evaluates to true or false
All of the following are valid declarations for Strings.
var = 0;
while(var < 200){
// do something repetitive 200 times
var++;
}
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