C++ program: How to fix the following message: The value of parameter n cannot be used as
Question:
C++ program: How to fix the following message: The value of parameter n cannot be used as a constant and the value of variable count cannot be used as a constant in this program?
#include
#include
#include
#include
using namespace std;
//function for average
double average(int arr[], int n)
{
double sum = 0; //initialize sum to 0
int i; //to iterate
//get sum
for (i = 0; i;>
sum += arr[i];
return sum / i; //return average
}
//median function
double median(int arr[], int n)
{
THE VALUE OF PARAMETER n CANNOT BE USED AS A CONSTANT
intarr_dup[n];//duplicate array
int i = 0; //to iterate
//copy arr to arr_dup
while (i
{
arr_dup[i] = arr[i];
i++;
}
//sort dup_arr
sort(arr_dup, arr_dup + n);
//return median
if (n % 2 != 0)
return arr_dup[n / 2];
else
return (arr_dup[n / 2] + arr_dup[n / 2 - 1]) / 2;
}
//function for mode
int mode(int arr[], int n)
{
THE VALUE OF PARAMETER n CANNOT BE USED AS A CONSTANT
int freq[n] = { 0 }; //frequency
int i, j; //to iterate
//calculate frequency
for (i = 0; i;>
{
for (j = 0; j;>
{
if (arr[i] == arr[j])
freq[i]++;
}
}
//assume first element as mode
int mode_index = 0;
//find mode
for (i = 1; i;>
{
if (freq[i]>freq[mode_index])
{
mode_index = i;
}
}
return arr[mode_index]; //return mode
}
//display results
void display(double avg, double med, int mod, string least, string most)
{
cout
cout
cout
cout
cout
}
//execution begins here
int main()
{
ifstream inFile(\"movies.txt\"); //open file
string line; //to read line
int count = 0; //to count students
//count students
while (getline(inFile, line))
count++;
inFile.close(); //close file
THE VALUE OF VARIABLE COUNT CANNOT BE USED AS A CONSTANT
int movies[count];//no. of movies array
string students[count];//students array
string fName, lName; //to read first name and last name
int i = 0; //to iterate
inFile.open(\"movies.txt\"); //open file again
//read data
while (getline(inFile, line))
{
istringstream iss(line); //string stream
iss >> fName >> lName >> movies[i]; //read values
students[i] = fName + \" \" + lName; //put student name in array
i++; //increment index
}
//call functions
double avg = average(movies, count);
double med = median(movies, count);
int mod = mode(movies, count);
//find students with least and most number of movies
string least, most;
int min, max;
least = most = students[0];
min = max = movies[0];
for (i = 1; i;>
{
if (movies[i]>max)
{
max = movies[i];
most = students[i];
}
else if (movies[i]
{
min = movies[i];
least = students[i];
}
}
//call function to display results
display(avg, med, mod, least, most);
inFile.close();
system(\"pause\");
return 0;
}
Movies.txt
Murray Brandl 3
Christal Delamater 4
Zetta Kinlaw 7
Elia Roy 3
Delmer Bibb 4
Joannie Nevers 4
Roselle Gose 10
Jonathan Basnett 0
Marcel Earwood 12
Marina Newton 2
Magdalen Stephan 3
Deane Leach 5
Mariana Crosley 6
Darby Froman 5
Shonda Kyzer 4
Ilana Netto 4
Candida Magnani 1
Laurena Stiverson 2
Elouise Muir 4
Rene Holiday 2
Expert Answer:
