instead函数怎么用(instead是什么意思)

insert函数是c语言（c++）中字符串处理的一个函数，可以把一个字符串（或是某个部分）插入另一个字符串。

应用

例子(c++):

// inserting into a string

#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，':') // 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)