Lab Objectives To use functions that reads and writes from/to a file Problem 1 A database file contains binary data (Check the sample data at the end of this document). The file contains a number of records, each record is stored as a "struct". struct employee { . } The struct is written to the file using fwrite. The sample data contains one record with the following values. 123456, John Smith, 70 main St. Toronto, ON M3M 3M3, 9, 73123.45 Write a C program that performs the following The file name is lab6_1.c The file takes command line parameters (argc and argv) If the command line arguments "-ID" followed by an integer, look for an employee with that ID in the file. If that ID exists, print the name on a line by itself. If There is no such ID print "No such employee" on a line by itself. . . int Employee_ID; char name [20]; // Employee name first name then last name char address [50]; //The employee address might contains spaces //Both name and address are terminated by //a null character . int job_code; // An integer between 1 and 12 float salary; If the arguments "-s" followed by a number, prints the names and salaries of the employees with a salary that is equal to or greater than that number followed by a comma, then the employee salary, for example John Smith, 73123.45 If the arguments is "-count" print the number of employees in the file If the arguments are "-name" followed by a name that may contains spaces, look for an employee with the same name and display his/her salary. If no such employee exist, display "No such employee" The quotes surrounding the arguments is for illustrative purpose only, they are not part of the input data, for example the actual input could be a.out -s 1234.56 every displayed line ends with '\n'
Lab Objectives To use functions that reads and writes from/to a file Problem 1 A database file contains binary data (Check the sample data at the end of this document). The file contains a number of records, each record is stored as a "struct". struct employee { . } The struct is written to the file using fwrite. The sample data contains one record with the following values. 123456, John Smith, 70 main St. Toronto, ON M3M 3M3, 9, 73123.45 Write a C program that performs the following The file name is lab6_1.c The file takes command line parameters (argc and argv) If the command line arguments "-ID" followed by an integer, look for an employee with that ID in the file. If that ID exists, print the name on a line by itself. If There is no such ID print "No such employee" on a line by itself. . . int Employee_ID; char name [20]; // Employee name first name then last name char address [50]; //The employee address might contains spaces //Both name and address are terminated by //a null character . int job_code; // An integer between 1 and 12 float salary; If the arguments "-s" followed by a number, prints the names and salaries of the employees with a salary that is equal to or greater than that number followed by a comma, then the employee salary, for example John Smith, 73123.45 If the arguments is "-count" print the number of employees in the file If the arguments are "-name" followed by a name that may contains spaces, look for an employee with the same name and display his/her salary. If no such employee exist, display "No such employee" The quotes surrounding the arguments is for illustrative purpose only, they are not part of the input data, for example the actual input could be a.out -s 1234.56 every displayed line ends with '\n'
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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![Lab Objectives
To use functions that reads and writes from/to a file
Problem 1
A database file contains binary data (Check the sample data at the end of this
document). The file contains a number of records, each record is stored as a
"struct".
struct employee {
.
}
The struct is written to the file using fwrite. The sample data contains one
record with the following values.
123456, John Smith, 70 main St. Toronto, ON M3M 3M3, 9, 73123.45
Write a C program that performs the following
The file name is lab6_1.c
The file takes command line parameters (argc and argv)
If the command line arguments "-ID" followed by an integer, look for an
employee with that ID in the file. If that ID exists, print the name on a line
by itself. If There is no such ID print "No such employee" on a line by itself.
.
int Employee_ID;
char name [20]; // Employee name first name then last name
char address [50]; //The employee address might contains spaces
//Both name and address are terminated by
//a null character.
.
int job_code; // An integer between 1 and 12
float salary;
If the arguments "-s" followed by a number, prints the names and salaries
of the employees with a salary that is equal to or greater than that number
followed by a comma, then the employee salary, for example
John Smith, 73123.45
If the arguments is "-count" print the number of employees in the file
If the arguments are "-name" followed by a name that may contains spaces,
look for an employee with the same name and display his/her salary. If no
such employee exist, display "No such employee"
The quotes surrounding the arguments for illustrative purpose only, they
are not part of the input data, for example the actual input could be
a. out-s 1234.56
every displayed line ends with '\n'](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9b507547-b332-47b2-8e5e-934d44333819%2F5ab7ba0c-99cd-4136-82cc-5b3c84eee1ef%2F9mf1wu_processed.png&w=3840&q=75)
Transcribed Image Text:Lab Objectives
To use functions that reads and writes from/to a file
Problem 1
A database file contains binary data (Check the sample data at the end of this
document). The file contains a number of records, each record is stored as a
"struct".
struct employee {
.
}
The struct is written to the file using fwrite. The sample data contains one
record with the following values.
123456, John Smith, 70 main St. Toronto, ON M3M 3M3, 9, 73123.45
Write a C program that performs the following
The file name is lab6_1.c
The file takes command line parameters (argc and argv)
If the command line arguments "-ID" followed by an integer, look for an
employee with that ID in the file. If that ID exists, print the name on a line
by itself. If There is no such ID print "No such employee" on a line by itself.
.
int Employee_ID;
char name [20]; // Employee name first name then last name
char address [50]; //The employee address might contains spaces
//Both name and address are terminated by
//a null character.
.
int job_code; // An integer between 1 and 12
float salary;
If the arguments "-s" followed by a number, prints the names and salaries
of the employees with a salary that is equal to or greater than that number
followed by a comma, then the employee salary, for example
John Smith, 73123.45
If the arguments is "-count" print the number of employees in the file
If the arguments are "-name" followed by a name that may contains spaces,
look for an employee with the same name and display his/her salary. If no
such employee exist, display "No such employee"
The quotes surrounding the arguments for illustrative purpose only, they
are not part of the input data, for example the actual input could be
a. out-s 1234.56
every displayed line ends with '\n'
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