Las variables sirven para guardar varia informacion. Las variables no hacen mas que reservar memoria para almacenar valores. Esto quiere decir que cuando tu creas una variable tu reservas espacio en la memoria para esta informacion.
Tu puedes almacenar informacion de varios tipos de datos como carácter, caracteres anchos, entero, punto flotante, punto flotante doble, boolean etc.
Aqui esta una tabla de algunas 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 | Range | 0 to 65,535 |
| signed short int | Range | -32768 to 32767 |
| long int | 4bytes | -2,147,483,647 to 2,147,483,647 |
| signed long int | 4bytes | same as long int |
| unsigned long int | 4bytes | 0 to 4,294,967,295 |
| float | 4bytes | +/- 3.4e +/- 38 (~7 digits) |
| double | 8bytes | +/- 1.7e +/- 308 (~15 digits) |
| long double | 8bytes | +/- 1.7e +/- 308 (~15 digits) |
| wchar_t | 2 or 4 bytes | 1 wide character |
Mastery 09 by Jose Eduardo Sanchez is licensed under a Creative Commons Attribution 4.0 International License.