//get user input using prompt and check number is multiple of 5 or not 
console.log("Check number is multiple of 5 or not")
let a= prompt("Enter a number")

if(a%5==0){
    console.log("Yes ${a} is multiple of 5")
}
else{
     console.log('No ${a} is not multiple of 5')

}



//give grades students to accroding to their number 

let number = prompt("enter you number")

if(number>=80 && number<=100){
    console.log("you got A grade")
}
else if(number>=70 && number<=79){
    console.log("you got B grade")
}
else if(number>=60 && number<=69){
    console.log("you got C grade")
}
else if(number>=50 && number<=59){
    console.log("you got D grade")
}
else if(number>=0 && number<=49){
    console.log("you got F grade")
}



//