Comments are notes within the actual program code that identify key features and steps of the program but that are written in such a way that the computer knows to ignore them when the program is executed. Comments are the <span>explanation source code of a computer </span><span>program. Their purpose is the code to be easier to understand.</span>
<span>There are 4 computer language generations. First is the first generation language or 1GL, second is the second-generation languages or the 2GL, next is the third-generation languages or the 3GL, and the last is fourth-generation languages or the 4GL.</span>