In C++, a variable is basically a named storage that our programs can manipulate. Each and every variable in C++ has particular type, determines the layout and size of the memory of the variable, and the value's range that can be stored within that memory.
Here is an example, uses many types of variables in C++:
/* C++ Variable Types */ #include<iostream.h> #include<conio.h> void main() { clrscr(); int i; float f; char c; double d; signed int si; unsigned int ui; cout<<"Enter any integer value: "; cin>>i; cout<<"You have "<<i; cout<<"\n\nEnter signed integer value: "; cin>>si; cout<<"You have "<<si; cout<<"\n\nEnter unsigned integer value: "; cin>>ui; cout<<"You have "<<ui; cout<<"\n\nEnter a floating-point value: "; cin>>f; cout<<"You have "<<f; cout<<"\n\nEnter a character: "; cin>>c; cout<<"You have "<<c; getch(); }
Here is the sample run of this C++ program:
C++ also allows to define various other types of variables, which we will cover in subsequent chapters like pointers, arrays, references, structures, and class, etc.
Here are some more C++ programs listed, that you may like: