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Merge pull request #931 from geoffliu/master

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[Java/zh-cn] Fix explanation for ++ and -- operators.
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Levi Bostian 2015-01-19 10:03:45 -06:00
commit 62c47e7c32
1 changed files with 9 additions and 6 deletions
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zh-cn/java-cn.html.markdown
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@ -161,10 +161,13 @@ public class LearnJava {
// 自增
int i = 0;
System.out.println("\n->Inc/Dec-rementation");
System.out.println(i++); //i = 1 后自增
System.out.println(++i); //i = 2 前自增
System.out.println(i--); //i = 1 后自减
System.out.println(--i); //i = 0 前自减
// ++ 和 -- 操作符使变量加或减1。放在变量前面或者后面的区别是整个表达
// 式的返回值。操作符在前面时，先加减，后取值。操作符在后面时，先取值
// 后加减。
System.out.println(i++); // 后自增 i = 1, 输出0
System.out.println(++i); // 前自增 i = 2, 输出2
System.out.println(i--); // 后自减 i = 1, 输出2
System.out.println(--i); // 前自减 i = 0, 输出0
///////////////////////////////////////
// 控制结构