♪ Exercise 6 ♪

#include
#include
#define cp cprintf
#define s scanf

float grade, average, items, sum;
void main()
{
clrscr();
average=0;
sum=0;
do
{
textcolor(YELLOW);cp("Enter grade (-1 to exit): ");
s("%f", &grade);

if((grade!=-1)&&(grade<=100)) {
items++;
sum=sum+grade; }
}while(grade!=-1);
average=sum/items;
textcolor(GREEN);cp("Class Average: %.2f\n", average);
if((average>=95)&&(average<=100)) {
textcolor(GREEN);cp("Rating: A"); }
else if((average>=90)&&(average<=94)) {
textcolor(GREEN);cp("Rating: B"); }
else if((average>=85)&&(average<=89)) {
textcolor(GREEN);cp("Rating: C"); }
else if((average>=80)&&(average<=84)) {
textcolor(GREEN);cp("Rating: D"); }
else if((average>=75)&&(average<=79)) {
textcolor(GREEN);cp("Rating: E"); }
else if(average<=74) {
textcolor(GREEN);cp("Rating: FAILED"); }
getch(); }