BASIC PROGRAM IN C LANGUAGE? INCLUDE, HEADER.

SIMPLE PROGRAM TO PRINT NAMES ON

                    CONSOLE USING C LANGUAGE

• #include <stdio.h> which means that <stdio.h> is the header file that says, that standard input and output header file, so every time there is a format writing the c language program that is the starting line of the code.

• And Include is the command that we use in the program to include the header file <stdio.h> and this file contains the Printf function means to, display any text onto the console.

• To use the print function, we need to use #include<stdio.h> then only the print function can be accessed otherwise not. 

•  The first line of the code of the program is, #include<stdio.h> this is the most compulsory step we can say in a c program.

                                                                         
                                                 #include<stdio.h>

VOID MAIN( )

• And the next step in the code of the program is, void main( ) which means main function header, this will be the header part of the c program this is the second most important line of code in the program.

• Program execution starts from which part of the program, is known as an entry point of that program, C program execution starts from "main" it is the entry of a program.

• So we can say that the main function is the entry point of a c program.

• The next step is the curly brace { which says, that the main function definition starts this is similar to HTML tags of opening and closing.  

                                                            void main( )

• In c language there is a case sensitive which means that no capital letters are not allowed, and square brackets also.

 MAIN FUNCTION STARTS {

• In the same way in C, we use again the curly brace { as the definition starts of the main function.

• So in the body of the program, we need to write the text, which we print onto the console firstly we should use Printf.

•  This means to display something and parenthesis and within the double quotes write what you want to print.

• For example: "Good" and at last we need to keep a semicolon if we don't keep a semicolon on it leads to a compilation error.

• So we write it as Printf("good"); this is the body part of the program and then finally for closing the program we again use curly brace } This is how our program then starts to execute.

                                                           {

                                                                  Printf("Good");

                                                             }

PROGRAM

                                   #include<stdio.h>---------->1st line of code

                                   void main()------------->2nd line of code

                                  {                 ------------->3rd line of code

                                         printf("good");---------->4th line of code

                                       }                    ------------>5th line of code

• Now let us see another example, to print your name we need to write the same as above there are some changes in it.

                                  #include<stdio.h> 

                                   void main()

                                 {

                                    printf("name is xxx");

                                 }

• The print function is very important because it lets us print on the monitor very important lines of code in the programming language.

• Within the double codes write the code that you want to display on the monitor is nothing but the code.

• The Next example is the homework set you can try which is to rewrite the above program for your name.

•  This is about a simple and easy program about, how to display something on the monitor.

PRACTISE 

• To add two numbers to the c language program

#include<stdio.h>

void main()

{

int a =10;

int b=20;

int c;

c=a+b;

print(c);

}

• Get the values from the user and subtract them.

#include<stdio.h>

void main()

{

int a=30;

int b=10;

int d;

d=a-b;

print(d);

}

• In the next blog, We learn some of the different data types and their use in the programs, format specifiers, and examples we are going to learn about each program also.