提供了push_back()成员函数以追加字符。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)
Parameters: 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
#include
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
要从最佳影片策划和实践问题去学习,检查了C++基础课程为基础,以先进的C++和C++ STL课程基础加上STL。要完成从学习语言到DS Algo等的更多准备工作,请参阅“完整面试准备课程” 。