problem 6:c++ 

#include <iostream>

#include <conio.h>

using namespace std;

void main ()

{

char material;

int ocounter = 0, ccounter = 0, pcounter = 0, mcounter = 0;


cout<<"Please enter the material of your choice:\n";

cout<<"o. oak\n";

cout<<"c. cherry\n";

cout<<"p. pine\n";

cout<<"m. mahogany\n";

cout<<endl;

cin>>material;

while (material != 'z')

{
cout<<"Please enter the material of your choice: ";
cin>>material;

if (material == 'o')

++ocounter;

else
if (material == 'c')

++ccounter;

else 
if (material == 'p')

++pcounter;

else
if (material == 'm')

++mcounter;
};



cout<<endl;

cout<<"Oak orders = "<<ocounter<<endl;

cout<<"Cherry orders = "<<ccounter<<endl;

cout<<"Pine orders = "<<pcounter<<endl;

cout<<"Mahogony orders = "<<mcounter<<endl;

cout<<endl;

}