提供了push_back()成员函数来追加字符。将字符c追加到字符串的末尾，将其长度增加一。句法：
void string::push_back (char c) 参数： Character which to be appended. Return value:None Error: throws length_error if the resulting size exceeds the maximum number of characters(max_size).
// CPP code for to illustrate
// std::string::push_back()
#include <iostream>
#include <string>
using namespace std;
// Function to demonstrate push_back()
void push_backDemo(string str1, string str2)
{
// Appends character by character str2
// at the end of str1
for(int i = 0; str2[i] != '\0'; i++)
{
str1.push_back(str2[i]);
}
cout << "After push_back:";
cout << str1;
}
// Driver code
int main()
{
string str1("Geeksfor");
string str2("Geeks");
cout << "Original String:" << str1 << endl;
push_backDemo(str1, str2);
return 0;
}输出：
Original String:Geeksfor After push_back:GeeksforGeeks
相关用法
注：本文由纯净天空筛选整理自 std::string::push_back() in C++。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。