C program main() declares the start of the function, while the two curly brackets show the start and finish of the function. Curly brackets in C are used to group statements together as in a function, or in the body of a loop. Such a grouping is known as a compound statement or a block

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Every C program contains a function called main. This is the start point of the program. Every function should return a value. In this program the function main returns no return value therefore we have written void main. We could also write this program as:

/* First Program to learn C */

#include <stdio.h>

main()
{

printf("This is a C program\n"); // printing a message

return 0;
}

Both the program are same and perform the same task. The result of both the program will print the following output on the screen:

This is a C program

#include<stdio.h> allows the program to interact with the screen, keyboard and file system of your computer. You will find it at the beginning of almost every C program.

main() declares the start of the function, while the two curly brackets show the start and finish of the function. Curly brackets in C are used to group statements together as in a function, or in the body of a loop. Such a grouping is known as a compound statement or a block.

printf("This is a C program\n"); prints the words on the screen. The text to be printed is enclosed in double quotes. The \n at the end of the text tells the program to print a new line as part of the output. printf() function is used for monitor display of the output.

Most of the C programs are in lower case letters. You will usually find upper case letters used in preprocessor definitions which will be discussed later, or inside quotes as parts of character strings.

Sample Chapters from book DATA RECOVERY WITH AND WITHOUT PROGRAMMING by Author Tarun Tyagi
Data Recovery with & without Programming


Publishers of the Book
Number of Pages
ISBN
Price of the Book


BPB Publications, New Delhi, India
540
81-7656-922-4
$69.00 (Including Shipping Charges, Cost of Book and Other expenses, Free Source Code CD included with the Book)





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