Exercise 6

Output:

#include
#include


void main()
{ clrscr();
float grade,average,sum;
int a=0;

while(grade!=-1)
{ sum=sum+grade;
textcolor(GREEN);cprintf("Enter grade: -1 to exit\n");
scanf("%f",&grade);


if(grade==-1)
{printf("\n
Average is %.2f\n",average=sum/a);}
a++;
}
if(average>=95 && average<=100){
printf("Rated A");}
else if(average>=90 && average<=94){
printf("Rated B");}
else if(average>=89 && average<=90){
printf("Rated C");}
textcolor(GREEN);cprintf("\n\n\ \ \Programmed by: Lady ü");

getch();
}