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The original code I wrote this program for, was used on my laptop that ran slackware 9.1. I wrote it to print off reciepts & end of day sales reports on my HP Laster Jet 4 while selling computer equipment on the road at computer shows.

Submitted By: no2pencil

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Views: 1,827

Language: C

Last Modified: May 18, 2007

Snippet

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define MAX 99
int main(void) {
struct {
char item[MAX];
float cost;
int amount;
} x[MAX];
int i=1,t2=0,ts=0,c=0;
float total=0;
char store[MAX],buffer[MAX],ch;
FILE *printer;
printf("\nEnter Store Name:");
while(ch!='\n') {
if(c>=98){
printf("\nOverflow");
exit(1);
}
ch=getc(stdin);
store[c]=ch;
c++;
}
c=0;
ch='\0';
while (i<MAX) {
printf("\nSale for %s", store);
printf("\nEnter item:");
while(ch!='\n') {
if(c>=98){
printf("\nOverflow");
exit(1);
}
ch=getc(stdin);
buffer[c]=ch;
c++;
}
for(c=0;c<MAX;c++) {
if(buffer[c]!='\n')x[i].item[c]=buffer[c];
}
c=0;
ch='\0';
printf("Enter cost:");
while(ch!='\n') {
if(c>=98){
printf("\nOverflow");
exit(1);
}
ch=getc(stdin);
buffer[c]=ch;
c++;
}
x[i].cost=atof(buffer);
c=0;
ch='\0';
printf("How many:");
while(ch!='\n') {
if(c>=98){
printf("\nOverflow");
exit(1);
}
ch=getc(stdin);
buffer[c]=ch;
c++;
}
x[i].amount=atoi(buffer);
c=0;
ch='\0';
if(x[i].amount==99) {
//i--;
if ((printer = fopen("LPT1","wb+")) == NULL) {
printf("Error trying to connect to printer");
}
printf("\n\nSales Summery for %s", store);
printf("\nTotal Transactions: %i\nItems sold: %i\nTotal profit: $%.2f", ts, t2, total);
fprintf(printer,"\n\r\n\rSales Summery for %s", store);
fprintf(printer,"\n\rTotal Transactions: %i\n\rItems sold: %i\n\rTotal profit: $%.2f", ts, t2, total);
i=1;
while(i<=ts) {
fprintf(printer,"\n\rSale #%i: %s\n\r Quantity: %i\n\r Total Sale: $%.2f", i, x[i].item, x[i].amount, x[i].cost*x[i].amount);
printf("\nSale #%i: %s\n Quantity: %i\n Total Sale: $%.2f", i, x[i].item, x[i].amount, x[i].cost*x[i].amount);
i++;
}
exit(0); /* clean smooth exit! End of day, relax */
if(printer)fclose(printer);
}
if((printer=fopen("LPT1","wb+"))==NULL){
printf("Error trying to connect to printer");
}
fprintf(printer,"\n\r%d of %s sold for $%.2f\n\r\n\r", x[i].amount, x[i].item, x[i].cost*x[i].amount);
printf("\n%d of %s sold for $%.2f\n\n", x[i].amount, x[i].item, x[i].cost*x[i].amount);
if(printer)fclose(printer);
t2=x[i].amount + t2;
total=total+(x[i].cost*x[i].amount);
ts=i;
i++;
}
if(printer) fclose (printer);
return 0;
}

Copy & Paste

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#define MAX 99

int main(void) {
     struct {
          char item[MAX];
        float cost;
        int amount;
    } x[MAX];
    int i=1,t2=0,ts=0,c=0;
    float total=0;
    char store[MAX],buffer[MAX],ch;
    FILE *printer;
    printf("\nEnter Store Name:");

while(ch!='\n') {
            if(c>=98){ 
                 printf("\nOverflow");
                 exit(1);
            }
            ch=getc(stdin);
            store[c]=ch;
            c++;
    }
    c=0;
    ch='\0';

while (i<MAX) {
         printf("\nSale for %s", store);
        printf("\nEnter item:");

while(ch!='\n') {
             if(c>=98){ 
                  printf("\nOverflow");
                  exit(1);
             }
             ch=getc(stdin);
             buffer[c]=ch;
             c++;
        }
            for(c=0;c<MAX;c++) {
                 if(buffer[c]!='\n')x[i].item[c]=buffer[c];
        }
        c=0;
        ch='\0';
        printf("Enter cost:");

while(ch!='\n') {
             if(c>=98){ 
                 printf("\nOverflow");
                exit(1);
            }
            ch=getc(stdin);
            buffer[c]=ch;
            c++;
       }
       x[i].cost=atof(buffer);
       c=0;
       ch='\0';
       printf("How many:");

while(ch!='\n') {
             if(c>=98){ 
                 printf("\nOverflow");
                 exit(1);
                 }
                 ch=getc(stdin);
                 buffer[c]=ch;
                 c++;
       }
       x[i].amount=atoi(buffer);
       c=0;
       ch='\0';

if(x[i].amount==99) {
                 //i--;

if ((printer = fopen("LPT1","wb+")) == NULL) {
                 printf("Error trying to connect to printer");
            }
            printf("\n\nSales Summery for %s", store);
            printf("\nTotal Transactions: %i\nItems sold: %i\nTotal profit: $%.2f", ts, t2, total);
            fprintf(printer,"\n\r\n\rSales Summery for %s", store);
            fprintf(printer,"\n\rTotal Transactions: %i\n\rItems sold: %i\n\rTotal profit: $%.2f", ts, t2, total);
            i=1;

while(i<=ts) {
                 fprintf(printer,"\n\rSale #%i: %s\n\r Quantity: %i\n\r Total Sale: $%.2f", i, x[i].item, x[i].amount, x[i].cost*x[i].amount);
                printf("\nSale #%i: %s\n Quantity: %i\n Total Sale: $%.2f", i, x[i].item, x[i].amount, x[i].cost*x[i].amount);
                i++;
           }
           exit(0); /* clean smooth exit! End of day, relax */
           if(printer)fclose(printer);
      }

if((printer=fopen("LPT1","wb+"))==NULL){
           printf("Error trying to connect to printer");
      }
      fprintf(printer,"\n\r%d of %s sold for $%.2f\n\r\n\r", x[i].amount, x[i].item, x[i].cost*x[i].amount);
      printf("\n%d of %s sold for $%.2f\n\n", x[i].amount, x[i].item, x[i].cost*x[i].amount);
      if(printer)fclose(printer);
      t2=x[i].amount + t2;
      total=total+(x[i].cost*x[i].amount);
      ts=i;
      i++;
  }
  if(printer) fclose (printer);
  return 0;
}

Comments
Linkowiezi 2008-12-15 05:38:37
In a bunch of your if statements, wouldn't it be better to use the 'MAX'/'MAX-1' value instead of 98 and 99? But you maybe not want to correct this if it's supposed to be your original code that you used before. But then this comment might help someone else wanting to use the snippet istead :)