StringStringBuilder的异同 -题库考试答案搜索网

StringStringBuilder的异同

问答题

2021-12-23 13:26

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正确答案

string的确是不能修改的：
stringstr="a"；
str="b"//str是被赋值了"b"没错，但是str里面原来的string值"a"并没有被修改。
stringstr="a"；
stringstr1=str；
str+="b"；//此时str="ab"，str1="a"；
StringBuilderstr=newStringBuilder（"a"）；
StringBuilderstr1=str；
str.Append（"b"）；
str.ToString（）和str1.ToString（）都是"ab"。

试题解析

标签： C#程序设计计算机科学技术

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