Question

and save it in the same folder as your source Download file: data.txt code file. data.txt contains a list of client's account number, client's name and their balance. Write a C program to read rows of data from the file and store them in the arrays. Display the list of client's account number, client's name and the client's balance on the screen in reverse order. The program should write the data in reverse order (without header) to another file called "newdata.txt" An example of output dialog is shown below: Account Name Balance 100 200 300 400 500 600 700 800 Brandon Johnny Aliyah Walter Sandor James Roberto Catherine 24.50 345.67 0.00 -45.23 214.89 1895.30 81.es 100.10

Answer 1

CODE:

#include <stdio.h>

#include <string.h>

int main(void) {

  FILE *fptr;

    // to count the account of lines

    int count=0;

    // to store account number

int temp_account;

    // to store balance

    double temp_balance;

    // to store name

    char temp_name[100];

    // parallel arrays to store these data

    int account[10];

    double balance[10];

    char name[20][10];

// open file

fptr = fopen("input.txt", "r");

// read contents from file usign fscanf

    // fscanf returns 3 as there are 3 auguments

while (fscanf(fptr,"%d %s %lf",&temp_account,temp_name,&temp_balance) == 3)

{

      // put name in string array using strign copy functino

      strcpy(name[count],temp_name);

      // add account

        account[count]=temp_account;

        // add balance

        balance[count]=temp_balance;

        count++;

}

    //close file

    fclose(fptr);

    // open file to write

    fptr = fopen("newdata.txt", "w");

    int i;

    // print header to console

    // format and print data in reverse order

    printf("Account\t\t\tName\t\tBalance\n\n");

    for(i=count-1;i>=0;i--){

       printf ("%d\t\t\t%10s\t\t%.2lf\n",account[i],name[i],balance[i]);

       fprintf (fptr,"%d\t\t\t%10s\t\t%.2lf\n",account[i],name[i],balance[i]);

    }

fclose(fptr);

return 0;

}

1 2 #include <stdio.h> #include <string.h> int main(void) { FILE *fptr; // to count the account of lines int count=0; // to store account number int temp_account; // to store balance double temp_balance; // to store name char temp_name[100]; // parallel arrays to store these data int account[10]; double balance [10]; char name[20][10]; // open file fptr = fopen("input.txt", "r"); // read contents from file usign fscanf // fscanf returns 3 as there are 3 auguments while (fscanf(fptr, "%d %s %1f",&temp_account, temp_name,&temp_balance) == 3) // put name in string array using strign copy functino strcpy(name[count], temp_name); // add account account[count]=temp_account; // add balance balance[count]=temp_balance; count++; //close file fclose(fptr); // open file to write fptr = fopen("newdata.txt", "w"); int i; // print header to console // format and print data in reverse order printf("Account\t\t\tName\t\tBalance\n\n"); for(i=count-1;i>=0;i--){ printf ("%d\t\t\t%10s\t\t%.21f\n", account[i], name[i],balance[i]); fprintf (fptr, "%d\t\t\t%10s\t\t%.21f\n", account[i], name[i], balance[i]); fclose(fptr); return 0;

OUTPUT:

Account Name Balance 100 200 300 400 500 600 700 800 Brandon Johnny Aliyah Walter Sandor James Roberto Catherine 24.50 345.67 0.00 -45.23 214.89 1005.30 81.05 100.10

FILE:

newdata.txt 1 heo 2 200 300 400 500 600 700 800 saved Brandon Johnny Aliyah Walter Sandor James Roberto Catherine inco 24.50 345.67 0.00 -45.23 214.89 1005.30 81.05 100.10

input.txt saved 1 800 Catherine 100.10 2 700 Roberto 81.05 600 James 1905.30 500 Sandor 214.89 5 400 Walter -45.23 6 300 Aliyah 0.00 7 200 Johnny 345.67 8 100 Brandon 24.50

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