April 24, 2013

System( ) Function in stdlib.h Library

04:09 Posted by Veera Bhadra , No comments
The C library function system() passes the command name or program name specified by a command to the host environment to be executed by the command processor. After the execution of the command it returns a value depending on the status of the execution. 

Declaration: 
To use this function,
 int system( const  char *command )    
         When you call this function, It  will invoke the command processor to execute a command. If the command execution is terminated the processor will trasnfer the control back to the program that has called the system command.

Parameters:
                 String containing name of system command or requested variable. 

Return Value:
            It will return an integer value, but the interpretation of that is system dependant. So, on different systems it gets interpreted differently. If an error occured in the program execution, '-1' is returned, Ootherwise it returns the status of command.

Click here to know how you can restart your computer using system function. 

As, always, Have a happy reading and Stay Awesome !
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