C language

I have learned the C language in 10 days. It is very useful language. It is useful to learn any another Computer language. C becomes a basic for writing an OS such as Windows, Unix, Linux etc. It is basically a Procedure Oriented Programming Language (POP).

       C language was found by Dennis Ritche at AT&T's bells Laboratories,USA. It is an advancement to Basic CPL... the then programming language. 

        Now in order to communicate with the computer, C language is used. C is a middle level language capable of interacting with the both hardware & software. 

How to learn C language? 

1. First learn the Alphabets & numbers.
2. Next, learn the Keywords.
3. Next, learn how to write an instruction.
4. Finally, how to write a program.

Now lets us see it in detail.

1. C supports all Alphabets, Numbers & special symbols.

• Keywords are the words reserved by th compiler 
• int - to declare an integer
• float - to declare a float i.e. decimal point numbers.

1. Instruction follows some rules

• Declaration type instruction declares a data type.
• I/O instructions for input and output.
• control instructions to take control to the specified point....etc

Now, lets see a sample program

   #include<stdio.h>    /* header file */

   void main()     /* function*/

   {

      int a,b,c;       /Declaration instruction/

            

      printf("enter the values");      /* for output */

      scanf("%d%d",&a,&b);        /* for input */

      

      c=a+b;          /*Arthematic instruction */

      printf("\n %d",c);

}