Why are computer languages used for problem solving?

A programming language is a systematic notation by which we describe computational process. Computational process means steps for solving a problem.

Understanding of computer software is imperfect without a basic knowledge of programming language. Programming language allow the programmers and end users to develop the programs that are executed by a computer. In today's world several computer languages exist. Some of these are created to serve a special purpose (like controlling a robot), while others are more flexible. General purpose tools that are suitable for many types of applications.

However, every computer language must have instructions that fall into following categories like:

1. Input/Output

2. Calculations/Text Manipulation

3. Logic/Comparison

4. Storage/Retrieval