- This is most likely a very stupid question, but in C, what is the data type for a string? I want to make the variable x = 'Slim Shady'. Would I declare x as an int? I have tried declaring it as a char, but when I cout the variable, it only gives the first letter. Any help would be appreciated.
- Data types in any of the language mean that what are the various type of data the variables can have in that particular language. Information is stored in computer memory with different data types.Whenever a variable is declared it becomes necessary to define a data type that what will be the type of data that variable can hold.
- Thank you radman. I spent all day trying to figure this out. Fully qualifying the data type with std::string and adding #include string to the Car.h file did the trick. The book I'm using never used strings in any of the example classes or constructors, yet they ask a review question using string.
- If we want to store the entire phrase as a single unit of data in just one storage location, then we must use a data type that allows for multiple characters to be stored under just one label. A data type that can be used for this in both C and C is referred to as 'c-string' (a chain of characters).
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Cout use the string data type, the C string header!must be included at the top of the program. Also, you’ll need to include using namespace std; to make the short name string visible instead of requiring the cumbersome std::string.
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While writing program in any language, you need to use various variables to store various information. Variables are nothing but reserved memory locations to store values. This means that when you create a variable you reserve some space in memory.
You may like to store information of various data types like character, wide character, integer, floating point, double floating point, boolean etc. Based on the data type of a variable, the operating system allocates memory and decides what can be stored in the reserved memory.
Primitive Built-in Types
C++ offers the programmer a rich assortment of built-in as well as user defined data types. Following table lists down seven basic C++ data types −
Type | Keyword |
---|---|
Boolean | bool |
Character | char |
Integer | int |
Floating point | float |
Double floating point | double |
Valueless | void |
Wide character | wchar_t |
Several of the basic types can be modified using one or more of these type modifiers −
- signed
- unsigned
- short
- long
The following table shows the variable type, how much memory it takes to store the value in memory, and what is maximum and minimum value which can be stored in such type of variables.
Type | Typical Bit Width | Typical Range |
---|---|---|
char | 1byte | -127 to 127 or 0 to 255 |
unsigned char | 1byte | 0 to 255 |
signed char | 1byte | -127 to 127 |
int | 4bytes | -2147483648 to 2147483647 |
unsigned int | 4bytes | 0 to 4294967295 |
signed int | 4bytes | -2147483648 to 2147483647 |
short int | 2bytes | -32768 to 32767 |
unsigned short int | 2bytes | 0 to 65,535 |
signed short int | 2bytes | -32768 to 32767 |
long int | 8bytes | -2,147,483,648 to 2,147,483,647 |
signed long int | 8bytes | same as long int |
unsigned long int | 8bytes | 0 to 4,294,967,295 |
long long int | 8bytes | -(2^63) to (2^63)-1 |
unsigned long long int | 8bytes | 0 to 18,446,744,073,709,551,615 |
float | 4bytes | |
double | 8bytes | |
long double | 12bytes | |
wchar_t | 2 or 4 bytes | 1 wide character |
The size of variables might be different from those shown in the above table, depending on the compiler and the computer you are using. https://analyticsintensive930.weebly.com/auto-tuneevovst-pc-v609-crack.html.
Following is the example, which will produce correct size of various data types on your computer.
This example uses endl, which inserts a new-line character after every line and << operator is being used to pass multiple values out to the screen. We are also using sizeof() operator to get size of various data types.
Integer Data Type
When the above code is compiled and executed, it produces the following result which can vary from machine to machine −
typedef Declarations
You can create a new name for an existing type using typedef. Following is the simple syntax to define a new type using typedef −
For example, the following tells the compiler that feet is another name for int −
Now, the following declaration is perfectly legal and creates an integer variable called distance −
Enumerated Types
An enumerated type declares an optional type name and a set of zero or more identifiers that can be used as values of the type. Each enumerator is a constant whose type is the enumeration. Serato sample vst crack mac.
Creating an enumeration requires the use of the keyword enum. The general form of an enumeration type is −
Here, the enum-name is the enumeration's type name. The list of names is comma separated.
For example, the following code defines an enumeration of colors called colors and the variable c of type color. Finally, c is assigned the value 'blue'.
By default, the value of the first name is 0, the second name has the value 1, and the third has the value 2, and so on. But you can give a name, a specific value by adding an initializer. For example, in the following enumeration, green will have the value 5.
How To Use String Data Type In Dev C Example
Here, blue will have a value of 6 because each name will be one greater than the one that precedes it.