PART2 OENECTVES Review the do while loco enew the oa-wnile loop Review how to fo

Question

PART2 OENECTVES Review the do while loco enew the oa-wnile loop Review how to format the outout in column enew how to format the output in columns Holi to create nd call the user-defnedunctions Apply reference paramenter to uer-detined funcsion

Explanation / Answer

#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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