let student={
    name:"Rahul",
    grade:85,
    subject:["Math","Science","English"],

    displayInfo:function()
    {
        console.log("Name : " + this.name);
        console.log("Grade :" + this.grade);
        console.log("Subjects " + this.subject.join(","));
    }
};

function checkGrade(studentObj)
{
    if(studentObj.grade>=50)
    {
        studentObj.passed=true;
    }
    else{
        studentObj.passed=false;
    }
}

student.displayInfo();

checkGrade(student);

console.log("\n Student object Details");
for(let key in student)
{
    console.log(`${key}:${student[key]}`);
}