It became one of the most popular programming languages in the world but C language had one major problem. C was a procedure-oriented language. This meant that in writing a typical C program, the programmer would start by describing the data and then write procedures to manipulate that data. Programmers eventually discovered that it made a program clearer and easier to understand if they were able to take a large data and group together with the operations that worked on that data. Such a grouping is called as class. Write programs by using classes are known as object-oriented design (OOD). Bjarne Stroustrup started working in 1980 on a new language, called ”C with Classes.” This Language improved on C by adding a number of new features, the most important of which was Classes. This new language was improved, augmented, and finally became C++.