c++ int double float size code example

Example 1: range of long long in c++

Long
Data Type	          Size             (in bytes)	Range
long int	            4	         -2,147,483,648 to 2,147,483,647
unsigned long int	    4	         0 to 4,294,967,295
long long int	        8	         -(2^63) to (2^63)-1
unsigned long long int	8	         0 to 18,446,744,073,709,551,615

Example 2: data types in c++

int myNum = 5;               // Integer (whole number)
float myFloatNum = 5.99;     // Floating point number
double myDoubleNum = 9.98;   // Floating point number
char myLetter = 'D';         // Character
bool myBoolean = true;       // Boolean
string myText = "Hello";     // String