Warning: Undefined variable $user in /home/geekint/public_html/learn/wp-content/plugins/google-plus-authorship/google-plus-authorhip.php on line 28

Warning: Attempt to read property "ID" on null in /home/geekint/public_html/learn/wp-content/plugins/google-plus-authorship/google-plus-authorhip.php on line 28

Deprecated: Function get_bloginfo was called with an argument that is deprecated since version 2.2.0! The home option is deprecated for the family of bloginfo() functions. Use the url option instead. in /home/geekint/public_html/learn/wp-includes/functions.php on line 6114

Deprecated: Function get_the_author_ID is deprecated since version 2.8.0! Use get_the_author_meta('ID') instead. in /home/geekint/public_html/learn/wp-includes/functions.php on line 6114

Warning: Undefined variable $customprofilefield in /home/geekint/public_html/learn/wp-content/plugins/author-box-with-different-description/author_box_display.php on line 66

Deprecated: Function get_the_author_description is deprecated since version 2.8.0! Use get_the_author_meta('description') instead. in /home/geekint/public_html/learn/wp-includes/functions.php on line 6114

Warning: Undefined variable $display_author_email in /home/geekint/public_html/learn/wp-content/plugins/author-box-with-different-description/author_box_display.php on line 152

Warning: Undefined variable $display_google_profile in /home/geekint/public_html/learn/wp-content/plugins/author-box-with-different-description/author_box_display.php on line 152

Warning: Undefined variable $display_facebook_profile in /home/geekint/public_html/learn/wp-content/plugins/author-box-with-different-description/author_box_display.php on line 152

Warning: Undefined variable $display_twitter_profile in /home/geekint/public_html/learn/wp-content/plugins/author-box-with-different-description/author_box_display.php on line 152

Warning: Undefined variable $display_youtube_profile in /home/geekint/public_html/learn/wp-content/plugins/author-box-with-different-description/author_box_display.php on line 152

Warning: Undefined variable $display_linkedin_profile in /home/geekint/public_html/learn/wp-content/plugins/author-box-with-different-description/author_box_display.php on line 152

Warning: Undefined variable $display_pinterest_profile in /home/geekint/public_html/learn/wp-content/plugins/author-box-with-different-description/author_box_display.php on line 152

The main functions can have arguments passed which are called as command line arguments. There are two command line arguments:

Argument count denoted by argc and
Argument vector denoted by argv

The argc is an integer variable which denotes the number of parameters passed and argv is pointer to array of character strings.

The syntax is as follows:

main( int argc , char * argv[ ])
{
…..
…..
}

It can also be returned as

main(argc,argv)
int argc;
char * argv[];
{
…….
…….
}

After the program is executed the first argument entered in prompt would be the name of the program which is to be executed followed by parameters. Say for example if the program name of execution is sample and say 3 values are to be passed namely a1,a2,a3 it is given as follows:

sample a1 a2 a3

So in this case argc have value as 3 which is the number of parameters passed and argv would have values as

argv[0]= sample
argv[1]=a1
argv[2]=a2
argv[3]=a3