Please post the solution and the output. Please save the program with the name \

Question

Please post the solution and the output. Please save the program with the name 'files.c'. Write a program that merges two files as follows.

One file will contain usernames (usernames.txt):

Moodie

Intelllligent

Happee ....

The other file will contain passwords (passwords.txt):

1 2 3 4 5 6

password

1 2 3 4 5 6 7 8 ...

The program should create a third file matching username and passwords (usernamesPasswords.txt):

Moodie            1 2 3 4 5 6

Intelllligent       password

Happee ...       1 2 3 4 5 6 7 8 ...

Give the user of your programs the option of displaying your output file.

Explanation / Answer

#include <stdio.h>
#include <stdlib.h>
#include<string.h>
#define LINE_SIZE 80

int main()
{

FILE *file1, *file2, *file3;
char userName[LINE_SIZE]={0,} ;
char password[LINE_SIZE]={0,};
file1 = fopen("username.txt", "r");

if(file1==NULL)
{
     printf("username.txt file is not present. ");
     return 1;
}

file2 = fopen("password.txt", "r");
if(file2==NULL)
{
    printf("password.txt file is not present.. ");
    return 1;
}

file3 = fopen("usernamesPasswords.txt", "w");
if(file3==NULL)
{
    printf("Not able to open usernamesPasswords.txt. ");
    return 1;
}

    while(( fgets(userName, LINE_SIZE, file1) != NULL) && (fgets(password, LINE_SIZE, file2) != NULL))
   {
       int i=0;
             while(userName[i]!=NULL)
           {
               if(userName[i]==' ')
               {
                   userName[i]=0;
               }
               i++;
           }
           fprintf(file3, "%10s %s",userName,password);
           memset(userName,0 ,sizeof(userName));
           memset(password,0,sizeof(password));
   }
   // closing file...
    fclose(file1);
    fclose(file2);
    fclose(file3);

return 0;
}

output file:

Moodie            1 2 3 4 5 6

Intelllligent       password

Happee ...       1 2 3 4 5 6 7 8 ...

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