table of contents
std::basic_string::push_back(3) | C++ Standard Libary | std::basic_string::push_back(3) |
NAME¶
std::basic_string::push_back - std::basic_string::push_back
Synopsis¶
void push_back( CharT ch ); (until C++20)
constexpr void push_back( CharT ch ); (since C++20)
Appends the given character ch to the end of the string.
Parameters¶
ch - the character to append
Return value¶
(none)
Complexity¶
Amortized constant.
Exceptions¶
If an exception is thrown for any reason, this function has no
effect (strong
exception guarantee).
(since C++11)
If the operation would result in size() > max_size(), throws
std::length_error.
Example¶
// Run this code
#include <cassert>
#include <string>
#include <iomanip>
#include <iostream>
int main()
{
std::string str{"Short string"};
std::cout << "before=" << std::quoted(str) <<
'\n';
assert(str.size() == 12);
str.push_back('!');
std::cout << " after=" << quoted(str) << '\n';
assert(str.size() == 13);
}
Output:¶
before="Short string"
after="Short string!"
See also¶
pop_back removes the last character
(C++11) (public member function)
2022.07.31 | http://cppreference.com |