string insert()函数的用法

最新推荐文章于 2025-06-19 16:05:02 发布

AC_Lee

最新推荐文章于 2025-06-19 16:05:02 发布

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分类专栏：字符串

本文链接：https://blog.youkuaiyun.com/xiaoli_nu/article/details/70175917

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本文通过一个具体的C++示例程序，详细介绍了如何使用std::string的insert方法来实现字符串的插入操作。示例中涵盖了多种insert方法的调用方式，包括插入字符串、字符以及特定位置的单个字符。

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#include <iostream>
#include <string>

int main (){
  std::string str="to be question";
  std::string str2="the ";
  std::string str3="or not to be";
  std::string::iterator it;
  // used in the same order as described above:
  str.insert(6,str2);                 // to be (the )question
  str.insert(6,str3,3,4);             // to be (not )the question
  str.insert(10,"that is cool",8);    // to be not (that is )the question
  str.insert(10,"to be ");            // to be not (to be )that is the question
  str.insert(15,1,':');               //加一个'.' to be not to be(:) that is the question
  it = str.insert(str.begin()+5,','); // to be(,) not to be: that is the question
  str.insert (str.end(),3,'.');       // to be, not to be: that is the question(...)
  str.insert (it+2,str3.begin(),str3.begin()+3); // (or )
  std::cout << str << '\n';
  return 0;
}
//output  to be, or not to be: that is the question...

毕竟官方用例，hin nice

link:
http://www.cplusplus.com/reference/string/string/insert/