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Variables
A statement such as x = 5 seems obvious enough. As you would guess, we are assigning the value of 5 to x. But what exactly is x? x is a variable.
A variable in C++ is a name for a piece of memory that can be used to store information. You can think of a variable as a mailbox, or a cubbyhole, where we can put and retrieve information. All computers have memory, called RAM (random access memory), that is available for programs to use. When a variable is declared, a piece of that memory is set aside for that variable.
In this section, we are only going to consider integer variables. An integer is a whole number, such as 1, 2, 3, -1, -12, or 16. An integer variable is a variable that can only hold an integer value.
In order to declare a variable, we generally use a declaration statement. Here
A statement such as x = 5 seems obvious enough. As you would guess, we are assigning the value of 5 to x. But what exactly is x? x is a variable.
A variable in C++ is a name for a piece of memory that can be used to store information. You can think of a variable as a mailbox, or a cubbyhole, where we can put and retrieve information. All computers have memory, called RAM (random access memory), that is available for programs to use. When a variable is declared, a piece of that memory is set aside for that variable.
In this section, we are only going to consider integer variables. An integer is a whole number, such as 1, 2, 3, -1, -12, or 16. An integer variable is a variable that can only hold an integer value.
In order to declare a variable, we generally use a declaration statement. Here