Why do we have different types of data type?
Different types of data are represented in different ways inside a computer and need varying amounts of memory to store them. They also have different operations that can be performed upon them. All values that belong to the same data type will be represented in the same way.
Why do OO languages allow users to define different data types?
Originally Answered: Why does a programing language define different data types? Data types allow a compiler to allocate the right memory space for a variable, and also let it perform type checking, making sure the program uses the variables correctly per their defined type.
What are data types in programming language?
Overview. A data type is a classification of data which tells the compiler or interpreter how the programmer intends to use the data. Most programming languages support various types of data, including integer, real, character or string, and Boolean.
What is the reason behind having multiple data types?
Because in life we have different datatypes. The meaning and the operations one runs on a date are not the same that would be run on a string or a number. Different objects require diffent datatypes to provide different behaviors.
How are data types specified in different programming languages?
Different programming languages use different keywords to specify different data types. For example, C and Java programming languages use int to specify integer data, whereas char specifies a character data type. Subsequent chapters will show you how to use different data types in different situations.
What are the two types of data types?
There are basically two types of data types in most of the computer programming languages: Basic/primitive data types. These are the most basic data types to store basic values like integer, character, float, Boolean (in C++, java and other programming languages). Derived/non-primitive data types.
Why do you have to specify the data type?
In some languages, you don’t have to specify the data type. Languages that support type inference can usually figure out the data type from your usage. For example, is internally typed as a string, because the value is surrounded by quotes.
Why do different languages use different types of types?
Different languages use types differently: some languages use types heavily to detect errors at compile time. Almost all languages have some notion of incompatible types as a runtime error. Usually a type error indicates a bug of some sort in the program. When we allow programs to continue despite errors, we likely get very bad answers.