# Counting the # of items in an array

• 03-23-2006
stevedawg85
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; }```
• 03-23-2006
laserlight
Quote:

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.
What do you think those 'last few lines' are supposed to do?
• 03-24-2006
Salem