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Tutorial Difficulty Level A static type variable declaration provides assurance to the compiler that there is one variable available with the given type and name so that the compiler can proceed for further compilation without requiring the complete detail of the variable. A variable declaration has its meaning at the time of compilation only, the compiler needs the actual variable declaration at the time of linking of the program.
Try the following example, where the variable has been declared with a type and initialized inside the main function:
package main
import "fmt"
func main() {
var x float64
x = 20.0
fmt.Println(x)
fmt.Printf("x is of type %T\n", x)
}
When the above code is compiled and executed, it produces the following result:
20 x is of type float64
