EXER 6

#include

#include

#define cp cprintf#define s scanffloat 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(); }