EXERCISE5

#include
#include

void main()
{
clrscr();
int a,b,grade,sum,x,subject;
float average;
printf("Enter your Subject:");
scanf("%s",&subject);
printf("Enter grade,-1 to exit:");
scanf("%d",&grade);
if(grade!=-1 && grade>=95 && grade<=100)
{
printf("Enter grade;-1 to exit:");
scanf("%d",&a);
sum=grade+a;
average=sum/2;
printf("Average is %.2f\n",average);
printf("Rated A");
}
if(grade!=-1 && grade>=90 && grade<=94)
{
printf("Enter grade;-1 to exit:");
scanf("%d",&a);
sum=grade+a;
average=sum/2;
printf("Average is %.2f\n",average);
printf("Rated B");
}
if(grade!=-1 && grade>=85 && grade<=89)
{
printf("Enter grade;-1 to exit:");
scanf("%d",&a);
sum=grade+a;
average=sum/2;
printf("Average is %.2f\n",average);
printf("Rated C");
}
if(grade!=-1 && grade>=80 && grade<=84)
{
printf("Enter grade;-1 to exit:");
scanf("%d",&a);
sum=grade+a;
average=sum/2;
printf("Average is %.2f\n",average);
printf("Rated D");
}
if(grade!=-1 && grade>=75 && grade<=79)
{
printf("Enter grade;-1 to exit:");
scanf("%d",&a);
sum=grade+a;
average=sum/2;
printf("Average is %.2f\n",average);
printf("Rated E");
}
if(grade!=-1 && grade<=74)
{
printf("SORRY YOUR FAILED IN THIS SUBJECT");
}
else
{
if(grade==-x)
printf("\"INVALID INPUT\"");
}
while(grade==-1)
{
printf("NO NUMBERS INPUTTED");}
getch();
}