for part a
#include
int main()
{
   int arr[4], i=0, sum=0;
   printf(\"Enter last 4 digit of your phone
number\");
   for (i=0; i<4; i++)
   {
     scanf(\"%d\",&arr[i]);
   }
   for (i=0; i<4; i++)
   {
       sum = sum +
arr[i];
   }
   printf(\" Average is :\" , sum/4);
   return 0;
}
for b part
#include
#include
struct student
{
   char name[20];
   int id;
   int hour_taken;
   int hour_passed;
   double gpa;
};
int main(void)
{
   printf(\" Enter student name , id , hours taken,
hours passed, GPA\");
   scanf(\"%s %d %d %d %f\", stu3.name,
&stu3.id,stu3.hour_taken, stu3.hour_passed, stu3.gpa );
}
