Variable Declarations
To declare a variable, specify a data type and name. Optionally you may provide an initializer.
- data-type variable-name ['=' expression];
Details
Details are as follows:
- You can declare more than one variable in the same declaration.
- Initialization is optional.
- Without initialization, integer variables are initialized to zero.
- Without initialization, double variables are initialized to zero.
- Without initialization, string variables are initialized to empty.
- Without initialization, Boolean variables are initialized to false.
Examples
The following example declares an integer variable named counter.
int counter;
The following example declares several integer variables named x, y, and z.
int x,y,z;
The following example declares an integer variable named counter and initializes its value to zero.
int counter = 0;
The following example declares a double-precision variable named acceleration and initializes its value to 9.80665.
double acceleration = 9.80665;
The following example declares a string variable named nameprefix and initializes its value to Quadrant.
string nameprefix = "Quadrant";