Counting the # of items in an array

I have this prog and what I need to do is have the user input their numbers and print the array, Then, for it to count the number of times the number was inputted and print a histogram of the number of times it was used. EX:

2.......10........3.5

4.......3.5 ..........21

3.........8...........7

//etc....

response ........# of times....... Histogram

1 .................... 2 ..................**

2 ................... 1 .......................*

//etc....

Here is what I have and I am unsure of the last few lines. I copied the last couple of lines from another example, I just included it because I know it will look somewhat to those lines. Please help, any help appreciated!

Code:

`#include <iostream>`

#include <iomanip>

using namespace std;

const int numrow = 5;

const int numcol = 3;

int main ()

{

double nums[numrow][numcol];

for (int i = 0; i <numrow; i++)

{

for (int j = 0; j < numcol; j++)

{

cout << "enter grades for row # " << (i + 1)<< ": ";

cin >> nums [i][j];

}

}

for (int a = 0; a < numrow; a++)

{

for (int b = 0; b < numcol; b++)

{

cout << setw (4) << nums [a][b];

}

cout << "Response" << setw( 13 ) << "Frequency"

<< setw( 17 ) << "Histogram" << endl;

for ( int i; i < numrow; i++ )

{

cout << setw( 7 ) << i << setw( 13 )

<< n[ i ] << setw( 9 );

for ( int j = 0; j < n[ i ]; j++ ) // print one bar

cout << '*';

cout << endl;

}

return 0;

}