Write a C program that creates customers\' bills for a carpet company when the f

Question

Write a C program that creates customers' bills for a carpet company when the following information is given:
a. the length and the width of the carpet in feet
b. the carpet price per square foot
c. the percent of discount for each customer

The labor cost is fixed at $0.35 per square foot. It is to be defined as a constant. The tax rate is 8.5% applied after the discount. It is also to be defined as a constant. The input data consist of a set of three integers representing the length and width of the room to be carpeted, the percentage of the discount the owner gives to the customer, and a real number representing the unit price of the carpet. The program is to prompt the user for this input as shown below.

MEASUREMENT

Length XXX feet
Width XXX feet
Area XXX sq ft

CHARGES

DESCRIPTION COST/SQ.FT. CHARGE/ROOM
----------- ----------- -----------

Carpet XXX.XX $XXXX.XX
Labor 0.35 XXXX.XX
-----------
INSTALLED PRICE $XXXX.XX
Discount XX% XXXX.XX
-----------
SUBTOTAL $XXXX.XX
Tax XXXX.XX
TOTAL $XXXX.XX

Now I know you have to create a header file such as #include<my.h> that has the #define declarations as well as the prototypes for the functions to be used in the actual program. I already have that written. What I don't understand is how to write main for this program. Can anyone help me? I would greatly appreciate it.

Explanation / Answer

Edit the following code and this code takes input from a txt file which you mentioned . #include #include #include "valid.c"struct purch_detail { char item_desc[20]; int unit_price; int qty; }; void display(); void entryData(); void readFile(); void getName(char *str); void getWriteFileName(char *); void getReadFileName(char *); void getzeroInteger(char *_chr, int *_value); int count=0; int total_price=0; int total_amt=0; char option; char filename [14]; FILE *fp; struct purch_detail *pd_ptr, *tmptr; void main() { clrscr(); pd_ptr = (struct purch_detail *) malloc(sizeof(struct purch_detail) * 10); tmptr = pd_ptr; printf(" Do you want to create the data file type 'y' for yes and 'n' for no."); scanf("%c", &option); fflush(NULL); if( option == 'y' || option == 'Y') { printf(" You can generate bill of maximum 10 item. "); getWriteFileName(filename); display(); } elseif( option == 'n' || option == 'N') { getReadFileName(filename); readFile(); } getch(); } void entryData() { while(1) { printf(" Enter item name : "); getName(tmptr->item_desc); getPosInteger("Enter unit price of the item : ", &tmptr->unit_price); getzeroInteger("Enter no of qty purchased : ", &tmptr->qty); if(tmptr->qty == 0) break; count ++; if (count >= 10) break; /* if ( count % 2 == 0) if ( (pd_ptr = (struct purch_detail *) realloc(pd_ptr, sizeof(struct purch_detail) * 2)) == NULL) { printf("Realloc failed. No enough memory available."); break; } */ tmptr++; } } void display() { tmptr = pd_ptr; fprintf(fp," Item Unit Price Quantity Total Price "); fprintf(fp," ______________________________________________________"); printf(" Item Unit Price Quantity Total Price "); printf(" ______________________________________________________"); while(1) { total_price = tmptr->unit_price * tmptr->qty ; fprintf(fp, " %-20s %4d %4d %5d", tmptr->item_desc, tmptr->unit_price, tmptr->qty, total_price); printf(" %-20s %4d %4d %5d", tmptr->item_desc, tmptr->unit_price, tmptr->qty, total_price); //printf(""); total_amt += total_price; count--; if ( count = 20 ) break; } fflush(NULL); if(errorflag) getName(str); *getstr=''; } void getzeroInteger(char *_chr, int *_value) { float tempval =1; int _ival=0; printf(" %s", _chr); _scaint = scanf("%f", &tempval); fflush(NULL); if ( _scaint != 0 ) { _ival = tempval; if ( tempval < 0 ) { printf("%s", " You should enter value greater then or equal to zero. Enter the value again..."); getzeroInteger(_chr, _value); } elseif ( _ival != tempval) { printf("%s", " Error(decimal value). It will be truncated the digit after the percision. Enter integer number only."); getzeroInteger(_chr, _value); } elseif( ! ( (tempval >= -32768 ) && (tempval

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