How to declare and use constants in Golang 1.20
0In this video we are going to generate source code for the GoLang Program, How to declare and use constants using chatGPT.
After generating we will verify and run the generated code.
IMPORTANT NOTE on SOURCE CODE: only source code that are acceptable by the youtube description box will be displayed.
##############SOURCE CODE#########################
package main
import "fmt"
func main() {
// Declaring constants
const pi float64 = 3.14159
const daysInWeek int = 7
const appName string = "My App"
const isDebug bool = false
// Using constants in a program
fmt.Println("The value of pi is:", pi)
fmt.Println("There are", daysInWeek, "days in a week")
fmt.Println("Welcome to", appName)
fmt.Println("Debug mode is set to", isDebug)
}
Below is the explanation for the program:
In this program, we are declaring four different constants: pi, daysInWeek, appName, and isDebug.
We declare each constant using the const keyword, followed by the name of the constant, its data type, and its value.
Once a constant is declared, its value cannot be changed.
In the second part of the program, we are using the constants in different ways.
We use them in fmt.Println() statements to print their values and to provide context for the output.
As you can see, constants are a way to declare values in a program that cannot be changed.
They are useful for declaring values that are known and fixed, such as mathematical constants, configuration values, or string literals that are used throughout the program.
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