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GO Program to Calculate Area of Rectangle and Square

Check the scope of variable declare outside the main function and (l,b) both variables declare in a single statement. In this example, we are calculating are of rectangle and square.

Example

package main

import "fmt"

var area int   // Variable declare outside the main function

func main(){
    var l,b int //Declaration of multiple Variables 
    fmt.Print("Enter Length of Rectangle : ")
    fmt.Scan(&l)
    fmt.Print("Enter Breadth of Rectangle : ")
    fmt.Scan(&b)
    area = l * b
    fmt.Println("Area of Rectangle : ",area)  //move to new line
   
    fmt.Print("Enter Length of Square : ")
    fmt.Scan(&l)
    area = l*l
    fmt.Print("Area of Square : ",area)
}
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