Q:

Golang program to demonstrate the float pointer

belongs to collection: Golang Pointer Programs

YasminRadwan26
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2022-07-03
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In this program, we will create a float variable and a float pointer that points to the variable, and then we will access and modify the value of the variable using the pointer.

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YasminRadwan26
2022-07-03
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Program/Source Code:

The source code to demonstrate the float pointer is given below. The given program is compiled and executed successfully.

// Golang program to demonstrate
// the float-pointer

package main

import "fmt"

func main() {
	var num float32 = 10.67
	var ptr *float32

	ptr = &num
	fmt.Printf("Num: %f\n", num)
	fmt.Printf("*Ptr: %f\n", *ptr)

	*ptr = 20.89
	fmt.Printf("Num: %f\n", num)
	fmt.Printf("*Ptr: %f\n", *ptr)
}

Output:

Num: 10.670000
*Ptr: 10.670000
Num: 20.889999
*Ptr: 20.889999

Explanation:

In the above program, we declare the package main. The main package is used to tell the Go language compiler that the package must be compiled and produced the executable file. Here, we imported the fmt package that includes the files of package fmt then we can use a function related to the fmt package.

In the main() function, we created a float variable num and a float pointer ptr. Then we initialized the pointer using the address of variable num. After that, we access the value of the variable using dereferencing operator "*". Then modify and printed the value of the variable on the console screen.

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