Computer language
Definition
Computer language
A formal language used to communicate instructions to a computer.
Note
Computer languages have fixed rules that must be followed.
Essential Features of a Computer Language
- Fixed Vocabulary:
- Computer languages have a predefined set of words (keywords) that have specific meanings.
- Examples: if, while, for, print.
- Unambiguous Meaning:
- Each statement in a computer language has one clear interpretation.
- This eliminates confusion and ensures the computer executes the instructions correctly.
- Consistent Grammar and Syntax:
- Computer languages follow strict rules for how statements are structured.
Example
- In Python, to output the string "Hello World!" you need to invoke command "print"
print("Hello World!")- But in Java, it is written differently
System.out.println("Hello World!");Example
In Python, print("Hello") is correct, but Print("Hello") will cause an error because Python is case-sensitive.
Why Are These Features Important?
- Precision: Computers require exact instructions to perform tasks.
- Error Reduction: Fixed rules help programmers avoid mistakes.
- Interoperability: Consistent syntax allows programs to be shared and understood by others.
Hint
When learning a new programming language, start by memorizing the keywords and basic syntax rules.
Self review
- How do the features of a computer language differ from those of natural languages?
- Why is it important for computer languages to be unambiguous?
