Extend the program written in the previous lab’s exercise, where you asked the user to

input his/her marks for five subjects and calculated his/her obtained marks and

percentage. So, after calculating the percentage, you should also tell his/her grade

according to the rules given in the previous task’s table.

#include <iostream> //preprogressive directive
using namespace std; // Global Identifier

int main() // main fuction
{ // Entry Point
// Declaring Veriable
int sub1, sub2, sub3, sub4, sub5, totalMarks = 500, obtainedMarks;
float percentage;
cout<<" Enter the marks of first subject : ";
cin>>sub1;
cout<<" Enter the marks of second subject : ";
cin>>sub2;
cout<<" Enter the marks of third subject : ";
cin>>sub3;
cout<<" Enter the marks of fourth subject : ";
cin>>sub4;
cout<<" Enter the marks of fifth subject : ";
cin>>sub5;

obtainedMarks = sub1+sub2+sub3+sub4+sub5;
percentage = (obtainedMarks*100) /totalMarks;
cout<<"Obtained Marks : "<<obtainedMarks<<endl;
cout<<"Percentage Marks : "<<percentage<<"%"<<endl;

if (percentage >= 90)
{
cout<<"A1";
}
else if (percentage >= 80)
{
cout<<"A";
}
else if (percentage >= 70)
{
cout<<"B";
}
else if (percentage >= 60)
{
cout<<"C";
}
else if (percentage >= 50)
{
cout<<"F";
}

return 0;
}