output exe keeps crashing

after writing the following code it compiles fine but then when i work through the program it crashes. when i try to debug line by line it seems to crash when it reaches line 85 and i can't see why this is happening as the values i am passing in are:
invoice no = 1
weight = 25000
quality = S
moisture = 0
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// Progarm 		 :
// Author  		 :
// Date    		 :
// Comments	    :


#include <iostream.h>
#include <conio.h>
#include <iomanip.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>

//Protoype
char get_reply( int col, int row);
void press_key(int col, int row);
void message(char msg[],int col , int row);
void set_screen (void);
void set_screen1 (void);
int get_no( int col, int row);  //Number > 0
int get_no1( int col, int row);  //Number between 1-5
int get_no2( int col, int row);  //Number between 25000 and 45000
int get_no3( int col, int row);  //Number between 25000 and 45000
struct delivery {
						int invoice_no;
                  float weight;
                  char quality[1];
                  int moisture;
                  float reduction;
                  float basic;
                  float payment;
					};


void main(void)
{
   //Data Declaration
	struct delivery deliveries[5];
   int x, y, z,out, opt, delivery_nos;//each int used for loops

   //Condition Output Stream for floating point values
   cout.setf(ios::fixed);
   cout.setf(ios::showpoint);
   cout.precision(2);
   do
   {
   	clrscr();
   	gotoxy(20,3); cout <<"ABC Deliveries Menu";
   	gotoxy(20,5); cout << "1.Enter Delivery";
   	gotoxy(20,7); cout << "2.Display Payment Totals";
   	gotoxy(20,9); cout << "3.Exit";
   	gotoxy(20,11); cout << "Choose Option [ ]";
   	opt = get_no(35,11);
      //if(opt==2 && deliveries[0].weight==0)
      //{
        //	message ("Option 2 can only be selected after entering delivery data",5,15);
        // gotoxy(20,11); cout << "Choose Option [ ]";
   	  //	opt = get_no(35,11);
     // }
      if (opt==1)
      {
      	gotoxy(20,15);cout<<"HOW MANY DELIVERIES? 1-5 [ ]";
         delivery_nos = get_no1(46,15);

   		for(x=0;x<delivery_nos; x++)
         {
            set_screen();
         	deliveries[x].invoice_no = get_no1(40,5);
            deliveries[x].weight = get_no2(46,7);
            deliveries[x].quality[0] = get_reply(46,9);
            deliveries[x].moisture = get_no3(45,11);
         }
         for(y=0;y,delivery_nos;y++)
         {
            if (deliveries[y].moisture<13)
         	deliveries[y].reduction =0.00;

            if (deliveries[y].moisture>12 || deliveries[y].moisture<16)
            deliveries[y].reduction = 0.02;

            if(deliveries[y].moisture>15)
            deliveries[y].reduction=0.05;

            if (deliveries[y].quality[0]=='S')
            deliveries[y].basic = deliveries[y].weight * 0.176;
            else
            	deliveries[y].basic = deliveries[y].weight * 0.135;

            if(deliveries[y].reduction==0.00)
            	deliveries[y].payment = deliveries[y].basic;
            else
            	deliveries[y].payment = deliveries[y].basic - (deliveries[y].reduction * deliveries[y].weight);

         }
      }

      if (opt==2)
      {
         set_screen1();
      	for (z=0;z< delivery_nos; z++)
         {
         	gotoxy(21,out);
            if(deliveries[x].basic<0.00)
            	cout<<"0.00";
            else
            	cout<<deliveries[z].basic;

            gotoxy(36,out);
            if(deliveries[z].reduction<0.00)
            	cout<<"0.00";
            else
            	cout<<deliveries[z].reduction;

            gotoxy(56,out);

            if(deliveries[z].payment<0.00)
            	cout<<"0.00";
            else
            cout<<deliveries[z].payment;


            //gotoxy(48,19);cout<<total_payment;


         }
      }

   }while(opt!=3);



} // End of Program

int get_no( int col, int row)  //Number > 0
{
		int no;		//local variable
      gotoxy(col,row); cin >> no;
      while ( no <=0)
      {
      		message("No must be Greater than Zero", 30,23);
            gotoxy(col,row); cout <<"____";
            gotoxy(col,row); cin >> no;
      }

      return no;
}

int get_no1( int col, int row)  //Number > 0
{
		int no;		//local variable
      gotoxy(col,row); cin >> no;
      while ( no <1 || no>5)
      {
      		message("No must be between 1 and 5", 30,23);
            gotoxy(col,row); cout <<" ";
            gotoxy(col,row); cin >> no;
      }

      return no;
}
int get_no2( int col, int row)  //Number > 0
{
		int no;		//local variable
      gotoxy(col,row); cin >> no;
      while ( no <25000 || no>45000)
      {
      		message("No must be between 25000 and 45000", 30,23);
            gotoxy(col,row); cout <<"     ";
            gotoxy(col,row); cin >> no;
      }

      return no;
}

int get_no3( int col, int row)  //Number > 0
{
		int no;		//local variable
      gotoxy(col,row); cin >> no;
      while ( no <0 || no>40)
      {
      		message("No must be between 0 and 40", 30,23);
            gotoxy(col,row); cout <<"  ";
            gotoxy(col,row); cin >> no;
      }

      return no;
}

void message(char msg[],int col , int row)
{
		int x;
		gotoxy(col,row); cout << msg;
      press_key(col,row+1);
      gotoxy(col,row);
      for( x=0; x < strlen(msg); x++)
      	cout<<" ";
      gotoxy(col, row+1); cout << "                                   ";
}

void press_key(int col, int row)
{
	char c;
   gotoxy(col,row); cout << "Press any key to Continue";
   c=getche();
}
char get_reply( int col, int row)        //Foreces Y or N
{
		char c;
      gotoxy(col,row); c=getche(); c = toupper(c);
      while( c !='S' && c !='F')
      {
       		message("Must be S or F",30,23);
            gotoxy(col,row); cout <<" ";
      		gotoxy(col,row); c=getche(); c = toupper(c);
      }
      return c;
}

void set_screen (void)
{
   clrscr();
	gotoxy(20,3); cout << "Please Enter your delivery details";
   gotoxy(20,5); cout << "Invoice Number 1-5 [ ]";
   gotoxy(20,7); cout << "Weight 25000kg - 45000kg [     ]";
   gotoxy(20,9); cout << "Quality [S]eed or [F]eed [ ]";
   gotoxy(20,11); cout << "Moisture Content 0 - 40 [  ]";
}
void set_screen1 (void)
{
   clrscr();
   gotoxy(20,3); cout << "Supplier Payment Details";
   gotoxy(17,5); cout <<"Basic Payment";
   gotoxy(5,6); cout <<"Invoice NO: 1. :";
   gotoxy(5,7); cout <<"            2. :";
   gotoxy(5,8); cout <<"            3. :";
   gotoxy(5,9); cout <<"            4. :";
   gotoxy(5,10); cout <<"            5. :";
   gotoxy(52,5); cout <<"Reduction";
   gotoxy(40,6); cout <<"            1. :";
   gotoxy(40,7); cout <<"            2. :";
   gotoxy(40,8); cout <<"            3. :";
   gotoxy(40,9); cout <<"            4. :";
   gotoxy(40,10); cout <<"            5. :";
   gotoxy(72,5); cout <<"Payment";
   gotoxy(60,6); cout <<"            1. :";
   gotoxy(60,7); cout <<"            2. :";
   gotoxy(60,8); cout <<"            3. :";
   gotoxy(60,9); cout <<"            4. :";
   gotoxy(60,10); cout <<"            5. :";
   gotoxy(20,19); cout <<"Total Payment to Supplier : ";
   gotoxy(20,20); cout <<"Total Weight of Grain Deliveries :";
}
I suggest looking at line 73:

 
        for(y=0;y,delivery_nos;y++)


What is the terminating condition for the loop?
thanks for the help have got it now, just changeed

for(y=0;y,delivery_nos;y++)

for

for(y=0;y<delivery_nos;y++)
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