Introduction to C Programming Language

Software is collection of program and a program is collection of instructions.

Development of software-

As the above diagram shown. before making any software first we see the user requirement and analysis on that problem and think that what is output and what is input. And then design the ALGORITHM.

ALGORITHM= > “Algorithm is sequence and step of program for solving the problem”

Programming Languages

1.    Low Level Language

2.    High Level Language

Low Level Language

1.    Machine Level Language2.    Assembly Language

Computer (Machine) understand only the binary number 0 and 1. And Machine language consist the instructions in the form of 0 and 1 that called the Machine level language. Computer understand only the Machine level language.

Main problem in writing the program in Machine language is that writing the program instructions in binary number. Machine level language is not portable. Every computer has it’s own machine instructions, so the program written for one computer is not valid for another Computer. Low level language work very fast.

We can say that Assembly Language is some advance version of Machine level language. And advance feature is that instructions are in the English word like “MOVE” “ADD” “SUB” etc. So it is easier to write. But Computer understand only Machine Level Language so there is use a Translator that called “ASSEMBLER”.

Writing the program in the Assembly language to keep in mind hardware structure. Here Assembly Language is not also portable because data stored in the Registers Set and each have different set of Registers, so we can say that Assembly language is not also portable.