Data types in C++

int - to store integer data. short, long and unsigned (int, long, short) are two variety of integers which can store integer data in diferent ranges
float - to store real numbers
double - to store real number with more precision than float
char - to store a single letter or symbols.
To store a word or sentence we need character array, would be discussed later on.
User defined data types, means we can define data types of our own as per our need.