Code:#include<iostream.h> #include<conio.h> int main() { clrscr(); int grade,total=0; float avg,a=1; char z,y,n; cout<<"Enter the grade of the student = "; cin>>grade; do { cout<<"\nDo you want to enter another grade? (y/n) - "; cin>>z; if ( z == y ) { cout<<"\nEnter the grade of the student = "; cin>>grade; } if ( z == n ) { cout<<"\nAverage of the student = "<<avg<<endl; getch (); return 0; } total=total+grade; avg=total/a; a++; }while ( a == a ); cout<<"\nAverage of the student = "<<avg<<endl; getch (); return 0; }