task 4common.js

// Task 1split W E L C O M E
let str4="Welcome";
console.log(str4.split(""));

// Task 2replace a by @
let str3="banana";
console.log(str3.replaceAll("a","@"));// replace all word

// Task 3 on if else statement odd or even

let num=4;
if (num%2==0)
{
     console.log("Even");    
}
else
{
    console.log("ODD");   
}


// Task 4 student name convert to upper string , function and print all values
function student (name,age,tamil,english,science,chemistry,maths)
{
  
let newname=name.toUpperCase();
console.log("name:",newname);  
console.log("age:",age);
let total=tamil+english+science+chemistry+maths
console.log("total:",total);
let percent=total/500*100
console.log("percentage:",percent,"%");
if (percent>=90 && percent<100)
{
    console.log("Remarks:Excellent");   
}
else if (percent >=71 && percent <=90)
{
console.log("Remarks: Very Good");
}
else if (percent>=51 && percent<70)
{
    console.log("Remarks:  Good");
}
else if (percent>=35 && percent<50)
{
    console.log("Remarks:Average");
}
else 
{
    console.log("Remarks:FAIL");   
}
}student("reena",20,92,56,76,89,45)

// task 5 switch using calculator operations

let a=5;
let b=10;
let operator='*';
switch(operator)
{
    case"+":
    result=a+b;
    console.log(result);
    break;
    case"-":
    result=a-b;
    console.log(result);
    break;
    case"*":
    result=a*b;
    console.log(result);
    break;
    case"/":
    result=a/b;
    console.log(result);
    break;
    default:
        console.log("check the value");
        
}