Answer:
#include <stdio.h>
void main(){
//sub part 1
double arr_d[] = {1.0,2.0,3.0,4.0,5.0};
//sub part 2
double *pDouble = arr_d;
double sum = 0.0;
int i;
//sub part 3
for (i = 0; i < 5; i++){
// Print value pointed by the pointer
printf("%lf ", *(pDouble + i));
}
//sub part 4
for (i = 0; i < 5; i++){
sum = sum + *(pDouble + i);
}
printf("\\Sum of the elements in an array : %lf",sum);
printf("\\Average of the elements in an array : %lf",sum/5);
}