System() function program in c

 In System library function in c use the command int system(const char *command) name or program name to the host environment and also executed command processor and returns the command after complete the task that is given in the c program.

 Parameters For System() function program in c :

Command:-  This string in c program containing the name of requested variable.  

 

Return the status of the command at the success and  returned is -1 on error.

 

Example:-

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main () {
   char command[50];

   strcpy( command, "-l" );
   system(command);

   return(0);
}

Example:-

This function list down the dir file with the help of c program

#include <stdio.h>
#include <string.h>

int main () {
   char command[50];

   strcpy( command, "dir" );
   system(command);

   return(0);
} 

system program in c