Append a char to the end of a string in C++

In this quick article, we’ll explore various methods to append a char at the end of a string in C++.

1. Using `push_back()` function

The recommended approach is to use the standard push_back() function, which is overloaded for chars and appends a character to the string’s end.

#include <iostream>

#include <string>

int main()

{

std::string s = "C+";

char ch = '+';

s.push_back(ch);

std::cout << s;

return 0;

}

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2. Using `+=` operator

We can also use the string::operator+=, which is overloaded for chars and internally calls to the push_back() function.

#include <iostream>

#include <string>

int main()

{

std::string s = "C+";

char ch = '+';

s += ch;

std::cout << s;

return 0;

}

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3. Using `append()` function

Another plausible approach is to use the append() function to append a single copy of a character at the end of the string, as demonstrated below:

#include <iostream>

#include <string>

int main()

{

std::string s = "C+";

char ch = '+';

s.append(1, ch);

std::cout << s;

return 0;

}

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4. Using `std::stringstream` function

Another good alternative is to use a string stream to convert between strings and other numerical types.

#include <iostream>

#include <string>

#include <sstream>

int main()

{

std::string s = "C+";

char ch = '+';

std::stringstream ss;

ss << s << ch;

ss >> s;

std::cout << s;

return 0;

}

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5. Using `insert()` function

Finally, we can also use the insert() function to insert a single copy of a character at the specified position in the string.

#include <iostream>

#include <string>

int main()

{

std::string s = "C+";

char ch = '+';

s.insert(s.length(), 1, ch);

std::cout << s;

return 0;

}

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That’s all about appending a char to the end of a string in C++.

Append a char to the end of a string in C++

1. Using push_back() function

2. Using += operator

3. Using append() function

4. Using std::stringstream function

5. Using insert() function

Share this:

1. Using `push_back()` function

2. Using `+=` operator

3. Using `append()` function

4. Using `std::stringstream` function

5. Using `insert()` function