C- Programming IOE 2067 Ashadh Q.No:7

Q 7 : WAP according to the display below :

Open a file named RECORD.txt for 'n' number of data where cost, service charge 5%, VAT 15% and total cost must be calculated by the program itself. [10 Marks]






Code Here :

// This code has been tested in Xcode 7.3 

//  main.c

//  resturentBilling

//

//  Created by Notorious MAC on 7/2/16.

//  Copyright © 2016 NotoriousMAC. All rights reserved.

//

//WAP to open a file named Record.txt for n number of data where cost, service charge 5%, VAT 15% and total cost must be calculated by program itself.

#include <stdio.h>

#include <stdlib.h> // includes standard library

// structure define here

struct record {

    char icode[10];

    char des [20];

    float rate ;

    int qty;

    float cost ;

    

}r;

int main(int argc, const char * argv[]) {

    // insert code here...

    FILE *fp;

    int n,i;

    float vat, schar, tcost, t=0;

    

    // open file in write mode

    

    fp=fopen("RECORD.txt", "w");

    

    // check for error here

    

    if (fp == NULL) {

        printf("\nFile cannot be opened");

        exit(1);

    }

    

    printf("\nEnter number of records ");

    scanf("%d",&n);

    

    for (i=0; i<n; i++) {

        printf("\nEnter itemCode, description, rate and quantity");

        scanf("%s%s%f%d",r.icode,r.des,&r.rate,&r.qty);

        r.cost = r.rate * r.qty;

        fwrite(&r, sizeof(r), 1, fp);

    }

    fclose(fp);

    

    

    // open file in read mode

    fp = fopen("RECORD.txt", "r");

    

    // check for error here

    

    if (fp == NULL) {

        printf("\nFile cannot be opened");

        exit(1);

    }

    

    printf("\n Item Code \t Description \t Rate \t Quantity \t cost");

    while (fread(&r, sizeof(r), 1, fp)==1) {

        t=t+r.cost;

    

    

    printf("\n%s \t\t\t %s \t\t\t %f \t %d \t %f",r.icode,r.des,r.rate,r.qty,r.cost);

}

    

    vat = 0.15*t;

    schar = 0.05*t;

    tcost = t+vat+schar;

    printf("\nVAT = %f",vat);

    printf("\Service Charge = %f",schar);

    printf("\nTotal cost = %f",tcost);

    fclose(fp);

    

    

    return 0;

}

Output :

Enter number of records 2

Enter itemCode, description, rate and quantitya

as

3.3

4

Enter itemCode, description, rate and quantityb

bs

4.4

5

 Item Code  Description  Rate  Quantity  cost

a  as  3.300000  4  13.200000

b  bs  4.400000  5  22.000000

VAT = 5.280000Service Charge = 1.760000

Total cost = 42.239998Program ended with exit code: 0