Convert string to binary in C++

This post will discuss how to convert a string to binary in C++.

The std::bitset container is used to store bits in C++. The idea is to iterate over the string and construct a bitset object with the bit values of each character. It can be used as follows to convert string to binary:

#include <iostream>

#include <string>

#include <bitset>

int main()

{

std::string str = "tech";

for (std::size_t i = 0; i < str.size(); i++) {

std::cout << std::bitset<8>(str[i]) << ' ';

}

return 0;

}

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Output:

01110100 01100101 01100011 01101000

Alternatively, we can use a range-based for-loop to iterate over the string.

#include <iostream>

#include <string>

#include <bitset>

int main()

{

std::string str = "tech";

for (char const &c: str) {

std::cout << std::bitset<8>(c) << ' ';

}

return 0;

}

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Output:

01110100 01100101 01100011 01101000

We can create a utility method to construct a new string, as shown below:

#include <iostream>

#include <string>

#include <bitset>

std::string toBinary(std::string const &str) {

std::string binary = "";

for (char const &c: str) {

binary += std::bitset<8>(c).to_string() + ' ';

}

return binary;

}

int main()

{

std::string str = "tech";

std::string binary = toBinary(str);

std::cout << binary << std::endl;

return 0;

}

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Output:

01110100 01100101 01100011 01101000

That’s all about converting string to binary in C++.

Convert string to binary in C++

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