write a program that stores the following prices in an array named price:9.92,6.32,12.63,5.95 and 10.29.

Question

write a program that stores the following prices in an array named price:9.92,6.32,12.63,5.95 and 10.29. Your program should also create two arrays named unit and amounts, each capable of storing five double precision numbers. have your function accept five user-input numbers into the units array when the program is amounts array and display the output in a tabular format.

Answer 1

#include <stdio.h>

#include <stdlib.h>

#define MAX_NUM_RECS (5)

typedef struct _TItem

{

double price;

double amount;

double unit;

} * TItem;

#define ITEM_REC_SIZE (sizeof(struct _TItem))

int Input(TItem * itemList)

{

int recCount=0;

int iLoop=0;

double flAmt;

printf(" How many items ???? :>");

scanf("%d",&recCount);

if (iLoop>MAX_NUM_RECS)

{

iLoop = MAX_NUM_RECS;

}

for (iLoop=0; iLoop<recCount; iLoop++)

{

printf("--------- Item # %d -------------- \n",(iLoop+1));

itemList[iLoop]= (TItem)malloc(ITEM_REC_SIZE);

if (itemList[iLoop]!=NULL)

{

printf(" Please input the price :>");

scanf("%lf",&flAmt);

itemList[iLoop]->price = flAmt;

printf(" Please input the unit :>");

scanf("%lf",&flAmt);

itemList[iLoop]->unit = flAmt;

printf(" Please intput the amount :>");

scanf("%lf",&flAmt);

itemList[iLoop]->amount = flAmt;

}

}

return(recCount);

}

void Output(TItem * itemList, int recCount)

{

int iLoop=0;

double subtotal;

TItem itemRecPtr;

double totalAmt;

double total;

totalAmt = 0;

total = 0;

printf(" PRICE UNIT AMOUNT SUBTOTAL \n");

for (iLoop=0; iLoop<recCount; iLoop++)

{

itemRecPtr = itemList[iLoop];

subtotal = itemRecPtr->amount * itemRecPtr->price * itemRecPtr->unit;

printf(" %lf %lf %lf %lf \n", itemRecPtr->price, itemRecPtr->unit, itemRecPtr->amount, subtotal);

totalAmt += itemRecPtr->amount;

total += subtotal;

}

printf(" TOTALS %lf %lf",totalAmt, total);

}

int main()

{

int iReturn=0;

TItem * dbArrayItem;

dbArrayItem = (TItem*) malloc( sizeof(TItem)*MAX_NUM_RECS);

if (dbArrayItem != NULL)

{

int recCount = Input(dbArrayItem);

Output(dbArrayItem, recCount);

}

else

{

printf(" Memory Allocation Error : no array - sorry \n");

iReturn = -1;

}

return(iReturn);

}