B

B is a general-purpose language developed at Bell Labs in the 1960s as a predecessor to the C programming language. It was designed for systems programming and has been widely used for applications ranging from operating systems to compilers.

Hello, world code example:

main()
{
    putstr("Hello world!*n");
    return(0);
}

Popularity: Less than 1% of developers are using or have used this language.*
*According to StackOverflow's 2023 survey.

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