How to Convert a Single Character to a `std::string` in C ?

Creating a std::string from a Single Character

You have a single char value and aim to convert it into a std::string. This process involves transforming the character into a string variable.

To achieve this, you can employ various methods:

1. std::string Constructor with Length Parameter:

   • std::string s(1, c);
   • This technique specifies the length of the string as 1 and initializes it with the provided character.

2. std::string with Brace-Enclosed Initializer:

   • std::string s{c};
   • Utilizing a brace-enclosed initializer list, you can directly set the string's value.

3. push_back() Method:

   • std::string s; s.push_back(c);
   • This method appends the character to an empty string, creating a string with that single character.

Example:

<code class="cpp">char c = 34;

std::string s1(1, c);
std::string s2{c};
std::string s3;
s3.push_back(c);

std::cout << s1 << std::endl;
std::cout << s2 << std::endl;
std::cout << s3 << std::endl;</code>

Output:

"
"
"

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