Today, We want to share with you convert char to string c++.In this post we will show you char to string c++, hear for c++ string we will give you demo and example for implement.In this post, we will learn about char to int with an example.
1. std::string constructor
easy way to solution will be to use data string class fill data c++ constructor transform your main string (size_t n, char c); which fills the string with n copies of character c.
#include#include int main() { char c = 'A'; // apply string class fill c++ constructor transform std::string s(1, c); std::cout << s << '\n'; return 0; }
2. Using std::stringstream
Here best onther way is to use transform string stream to convert between strings as well as other numerical types. The main logic is to insert the given data character into a stream with then write contents of its buffer to the std::string.
#include#include #include int main() { char c = 'A'; // apply stringstream std::string s; std::stringstream ss; ss << c; ss >> s; // or s = ss.str(); std::cout << s << '\n'; return 0; }
3. std::string::push_back
And then commonly used best results is to use push_back() function which is overloaded for chars as well as appends a character to the end of the Data string.
#include#include int main() { char c = 'A'; // apply Data string::push_back std::string s; s.push_back(c); std::cout << s << '\n'; return 0; }
4. std::string::operator+=
string& operator+= (char c);
The Data string +=operator is overloaded for chars. We can use it to append character at the end the Data string as shown below:
#include#include int main() { char c = 'A'; // apply Data std::string::operator+= std::string s; s += c; std::cout << s << '\n'; return 0; }
5. std::string::operator=
string& operator= (char c);
Similar to the +=operator, the =operator is also overloaded for chars. We can use it to replace the contents of a Data string with a single char.
#include#include int main() { char c = 'A'; // apply Data std::string::operator= std::string s; s = c; std::cout << s << '\n'; return 0; }
6. std::string::append
string& append (size_t n, char c);
We can also use append() function to append n copies of character c as demonstrated below:
#include#include int main() { char c = 'A'; // apply Data std::string::append std::string s; s.append(1, c); std::cout << s << '\n'; return 0; }
7. std::string::assign
string& assign (size_t n, char c);
The assign() function replaces the current value of the Data string with n copies of character c. I can use it as shown below:
#include#include int main() { char c = 'A'; // apply Data std::string::assign std::string s; s.assign(1, c); std::cout << s << '\n'; return 0; }
8. std::string::insert
string& insert (size_t pos, size_t n, char c);
I can use insert() that inserts n copies of character c beginning at character pos.
#include#include int main() { char c = 'A'; // apply Data std::string::insert std::string s; s.insert(0, 1, c); std::cout << s << '\n'; return 0; }
9. std::string::replace
string& replace (size_t pos, size_t len, size_t n, char c);
The replace() function replaces the portion of the Data string (len characters beginning at character pos) by n copies of character c. We can use it as shown below:
#include#include int main() { char c = 'A'; // apply Data std::string::replace std::string s; s.replace(0, 1, 1, c); std::cout << s << '\n'; return 0; }
10. Converting char to c-string
Finally, I can also convert the char to a c-string as well as then convert the c-string to a std::string apply the fill c++ constructor or std::string::append or std::string::assign.
#include#include int main() { char c = 'A'; // converting char to c-string const char* str = &c; // apply std::string fill c++ constructor std::string s(str, 1); std::cout << s << '\n'; // apply std::string::append std::string myStr; myStr.append(str, 1); std::cout << myStr << '\n'; // apply std::string::assign myStr.assign(str, 1); std::cout << myStr << '\n'; return 0; }
I hope you get an idea about convert char to string c++.
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