Computer
Program:
A set of instructions given to the
computer to perform a specific task is called computer program. A computer
program is written in a programming language. A programming language provides
rules for writing programs. Since the advent of computer many programming
languages have been developed such as C, C++,C#, JAVA, BASIC, COBOL, FORTRAN,
PASCAL etc.
History of
C Language:
C is a general purpose programming
language. It was developed at AT & T Bell Laboratories, USA in 1972. It was
designed and developed by Dennis Ritche. The C language was developed to write
system programs for UNIX operating systems.
Source
Program:
A program written in high level
language is called source program. It is also called source code.
The computer does not understand
source program. It works only binary numbers, zeroes or ones or combination of
these. Therefore, the source program cannot run directly on the computer. It
first converted into the binary numbers for execution by the computer.
Object
Program:
A computer program in a machine
language is called object program. It is also called object code.
Machine language is a native language
of the computer. Therefore a program written in machine language or in the form
of zeroes or ones can runs directly on the computer.
