16-11-2012, 02:13 PM
gas agency Management system
[attachment=39775]
HISTORY OF C:
C is a popular general purpose programming language. It is one of the most popular computer
languages today, because it is a structured, high level, machine independent language.
The root of all modern language is ALGOL, introduced in early 1960’s. ALGOL was the 1 s
t computer language to use a block structure. Subsequently, several other languages were
announced after 1960’s. In 1967, Martin Richard developed a language called BCPL i.e. basic
combined programming language mainly for writing system software. In 1970, Ken Thompson
created a language using many features of BCPL and called it simply B. B was used to create
early version of UNIX operating system.
C was evolved from ALGOL, BCPL, and B by Dennis Ritchie at the Bell Laboratories in
1972, strongly associated with UNIX. During 1970’s, C had evolved into the
“TRADITIONAL C”. With the publication of the book ‘The C Programming language’ by
Brian Kerningham and Dennis Ritchie in 1978, it becomes more powerful.
In 1983, American National Standards Institutes (ANSI) appointed a technical committee
to define a standard for C. The committee approved a version of C in December 1989,
which is now known as ANSI C. It was then approved by International Standard
Organization (ISO) in 1990.
IMPORTANCE OF C:
The increasing popularity of C is probably due to its many desirable qualities. The C compiler
combines the capabilities of an assembly language with the features of a high level language and
therefore it is well suited for writing both system software and business packages. In fact many of
the C compilers available in the market are written in C. Programs written in C are efficient and
fast. This is due to its variety of data types and powerful operators. It is many times faster than
BASIC.
There are only 32 key words in ANSI C and its strength lies in its built in functions. C is
highly portable; this means that C programs written for one computer can be run on
another with little or no modifications. C language is well suited for structured
programming, thus requiring the user to think of a problem in terms of function modules or
blocks. This modular structure makes program de-bugging, testing and maintenance
easier.Another important feature of C is its ability to extend itself. We can continuously
add our own functions to C library, thus our programming task becomes so easier and
simple.
INTRODUCTION:
We have discussed so far various features of C language and are ready to write and execute
program of modest complexity. However, before attempting to develop complex programs, it is
worthwhile to consider some programming techniques that would help design efficient and error
free.
The program development process includes three important stages, namely, program
design, program coding and program testing. All the three stages contribute to the
production of high quality program.
In “GAS AGENCY MANAGEMENT SYSTEM” we have done system design, source
coding, and program testing and added many more features to facilitate the user with the
best. We have given the user the facility to enter the customer’s record and see whether
the user is provided with the gas cylinder and the option for gas cylinder booking and
many more options.
We can improve the efficiency of the system, thus overcome the drawbacks of the existing
system.
· Less human error
· Strength and strain of manual labour can be reduced
· High security
· Data consistency
· Easy to handle
· Easy data updating
· Easy record keeping
· Backup data can be easily genera
Introduction of gas agency
management system
We can make this gas management system in C language by using three or more than three
header files or many data types such as:
1. #include<stdio.h> : this header file will contain Scanf() , Printf () And, there are many header
files which are used in this program….
2. #include<conio.h>: this header file will contain Clrscr(); , Getch(); , and many more…..
a. #include<math.h>: this header file will contain power function(pow()) ,
squareroots function , cuberoots function , etc are used in this program…
b. #include<string.h> : this header file will contain string function such as 1.Strrev();
i. Strlen();
ii. Strupr();
iii. Strlwr();
iv. And many mores……
[attachment=39775]
HISTORY OF C:
C is a popular general purpose programming language. It is one of the most popular computer
languages today, because it is a structured, high level, machine independent language.
The root of all modern language is ALGOL, introduced in early 1960’s. ALGOL was the 1 s
t computer language to use a block structure. Subsequently, several other languages were
announced after 1960’s. In 1967, Martin Richard developed a language called BCPL i.e. basic
combined programming language mainly for writing system software. In 1970, Ken Thompson
created a language using many features of BCPL and called it simply B. B was used to create
early version of UNIX operating system.
C was evolved from ALGOL, BCPL, and B by Dennis Ritchie at the Bell Laboratories in
1972, strongly associated with UNIX. During 1970’s, C had evolved into the
“TRADITIONAL C”. With the publication of the book ‘The C Programming language’ by
Brian Kerningham and Dennis Ritchie in 1978, it becomes more powerful.
In 1983, American National Standards Institutes (ANSI) appointed a technical committee
to define a standard for C. The committee approved a version of C in December 1989,
which is now known as ANSI C. It was then approved by International Standard
Organization (ISO) in 1990.
IMPORTANCE OF C:
The increasing popularity of C is probably due to its many desirable qualities. The C compiler
combines the capabilities of an assembly language with the features of a high level language and
therefore it is well suited for writing both system software and business packages. In fact many of
the C compilers available in the market are written in C. Programs written in C are efficient and
fast. This is due to its variety of data types and powerful operators. It is many times faster than
BASIC.
There are only 32 key words in ANSI C and its strength lies in its built in functions. C is
highly portable; this means that C programs written for one computer can be run on
another with little or no modifications. C language is well suited for structured
programming, thus requiring the user to think of a problem in terms of function modules or
blocks. This modular structure makes program de-bugging, testing and maintenance
easier.Another important feature of C is its ability to extend itself. We can continuously
add our own functions to C library, thus our programming task becomes so easier and
simple.
INTRODUCTION:
We have discussed so far various features of C language and are ready to write and execute
program of modest complexity. However, before attempting to develop complex programs, it is
worthwhile to consider some programming techniques that would help design efficient and error
free.
The program development process includes three important stages, namely, program
design, program coding and program testing. All the three stages contribute to the
production of high quality program.
In “GAS AGENCY MANAGEMENT SYSTEM” we have done system design, source
coding, and program testing and added many more features to facilitate the user with the
best. We have given the user the facility to enter the customer’s record and see whether
the user is provided with the gas cylinder and the option for gas cylinder booking and
many more options.
We can improve the efficiency of the system, thus overcome the drawbacks of the existing
system.
· Less human error
· Strength and strain of manual labour can be reduced
· High security
· Data consistency
· Easy to handle
· Easy data updating
· Easy record keeping
· Backup data can be easily genera
Introduction of gas agency
management system
We can make this gas management system in C language by using three or more than three
header files or many data types such as:
1. #include<stdio.h> : this header file will contain Scanf() , Printf () And, there are many header
files which are used in this program….
2. #include<conio.h>: this header file will contain Clrscr(); , Getch(); , and many more…..
a. #include<math.h>: this header file will contain power function(pow()) ,
squareroots function , cuberoots function , etc are used in this program…
b. #include<string.h> : this header file will contain string function such as 1.Strrev();
i. Strlen();
ii. Strupr();
iii. Strlwr();
iv. And many mores……