Write two functions, which read/write an array of records to/from a file. Write driver code to test the two functions. The driver code and the test output must show clearly that the file input and output work correctly

fwrite

/ / C program for writing

/ / struct to file

#include

#include

#include

/ / a struct to read and write

struct person

{

int id;

char fname[20];

char lname[20];

};

int main ()

{

FILE * outfile;

/ / open file for writing

outfile = fopen ("person. dat", "w");

if (outfile = = NULL)

{

fprintf (stderr, "/nError opend file/n");

exit (1);

}

struct person input1 = {1, "rohan", "sharma"};

struct person input2 = {2, "mahendra", "dhoni"};

/ / write struct to file

fwrite (&input1, sizeof (struct person), 1, outfile);

fwrite (&input2, sizeof (struct person), 1, outfile);

if (fwrite! = 0)

printf ("contents to file written successfully!/n");

else

printf ("error writing file!/n");

/ / close file

fclose (outfile);

return 0;

}

fread

/ / C program for reading

/ / struct from a file

#include

#include

/ / struct person with 3 fields

struct person

{

int id;

char fname[20];

char lname[20];

};

/ / Driver program

int main ()

{

FILE * infile;

struct person input;

/ / Open person. dat for reading

infile = fopen ("person. dat", "r");

if (infile = = NULL)

{

fprintf (stderr, "/nError opening file/n");

exit (1);

}

/ / read file contents till end of file

while (fread (&input, sizeof (struct person), 1, infile))

printf ("id = %d name = %s %s/n", input. id,

input. fname, input. lname);

/ / close file

fclose (infile);

return 0;

}