Write a C++ program that repeatedly inputs students scores an

d determines the letter grades

.

The

scores should be stored in a file called

scores.txt

.

For each score, output

the

score along

with

its

letter grade. Your program should

count the number of As, Bs, etc.

Use five counters

(

a_count, b_count, etc

)

.

See main program below.

The letter grade is

determined

based on the following scale:

>=

90 (A), >= 80 (B), >= 70(C), >= 60(D), >= 0(F)

.

Output

all

frequencies.

Your program

mu

st

, at least,

include

the following functions:

A function

(

get_

grade

)

that

takes a score as a parameter and returns a letter grade.

o

char get_grade(double score);

//prototype

A void function to print the score and the grade.

o

void print_grade(double score,

char grade);

A void function to print the frequencies.

void print_frequencies(int a_count, int b_count,

int

c_

count, int d_count, intmf_count);