Consider the above data, we know that there are different types of data are used in the computer.

Question

Name   : Jose

Roll no :  20

Age  :  17

Weight :  45,650

Consider the above data, we know that there are different types of data are used in the computer. Explain different data types used in C++

Answer 1

1. int data type: 

It is used to store whole numbers without fractional (decimal point) part. It can be either negative or positive. It consumes 2 bytes(16 bits) of memory.i.e. 216 = 65536 numbers. We can store a number in between -32768 to + 32767.

2. char data type: 

Any symbol from the keyboard, eg. ‘A’,’9′,…. It consumes one byte( 8 bits) of memory. It is internally treated as integers, i.e. 28 = 256 characters. Each character is having a ASCII code, ‘a’ is having ASCII code 97 and zero is having ASCII code 48.

3. float data type:

It is used to store real numbers i.e. the numbers with decimal point. It uses 4 bytes(32 bits) of memory. 

Eg. 67.89, 89.9 E15

4. double data type: 

It is used to store very large real numbers. It uses 8 bytes(64 bits) of memory. 

5. void data type: 

void means nothing. It is used to represent a function returns nothing.