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- (Statistics) a. Write a C++ program that reads a list of double-precision grades from the keyboard into an array named grade. The grades are to be counted as they’re read, and entry is to be terminated when a negative value has been entered. After all grades have been input, your program should find and display the sum and average of the grades. The grades should then be listed with an asterisk (*) placed in front of each grade that’s below the average. b. Extend the program written for Exercise 1a to display each grade and its letter equivalent, using the following scale: Between90and100=AGreaterthanorequalto80andlessthan90=BGreaterthanorequalto70andlessthan80=CGreaterthanorequalto60andlessthan70=DLessthan60=F(Numerical) Given a one-dimensional array of integer numbers, write and test a function that displays the array elements in reverse order.int xRes-512, yRes-256; float *xtable; // pointer to pointer[s] xtable = new float [yRes]; // a ("column") array to hold 'float type pointers // each element of the above array points to a 'row' of xRes elements for (int i-e;i getsize(XRes, yRes); // NOTE the j,i ordering below (twice), since we specify coords as (x,y) [not (y,x)] for(int i-0;i setvalue(j,i,100); // constant value of 100 at all locations for (int i=0;i getvalue(j,i) <« " "; cout <« endl; } delete a;
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