CS121 Exercises 6

Output:

Exer6

#include

#include
float grade, average, items, sum;

void main(){

clrscr();

average=0;sum=0;do{

printf("Enter grade (-1 to exit): ");

scanf("%f", &grade);if((grade!=-1)&&(grade<=100)){items++;sum=sum+grade;}}

while(grade!=-1);
average=sum/items;

printf("Class Average: %.2f\n", average);
if((average>=95)&&(average<=100)){printf("Rating: A");}else if((average>=90)&&(average<=94)){printf("Rating: B");}else if((average>=85)&&(average<=89)){printf("Rating: C");}else if((average>=80)&&(average<=84)){printf("Rating: D");}else if((average>=75)&&(average<=79)){printf("Rating: E");}else if(average<=74){printf("Rating: FAILED");} getch();

}