#include <stdio.h>  
#define CLEAR_SCREEN system("cls")  
#define CHANGE_TITLE system("title Simple Command Prompt");  
int main() {  
	CHANGE_TITLE;  
	CLEAR_SCREEN;  
	printf("\n\tWelcome to simple command prompt coded by %s\n\tType\  
\"help\" for available command\n\n","ilmusoft.com");  
	run();	  
}  
int run() {  
	char input[512];  
	char command[512];  
	printf("Run:> ");  
	gets(input);  
	if (strcmp(input,"ping")==0){  
		char host[512];  
		printf("Type destionation host: ");  
		scanf("%s",host);  
		sprintf(command,"ping %s",host);  
		system(command);  
		  
	}  
	else if(strcmp(input,"quit")==0 || strcmp(input,"q")==0){  
		exit(0);  
	}  
	else if(strcmp(input,"whoami")==0){  
		system("whoami");  
	}  
	else if(strcmp(input,"help")==0){  
        printf("Available command:\n\  
        whoami\tprint current user\n\  
        ping\tsend ping request\n\  
        q\tquit from this console\n\  
        help\tprint this info\n");  
	}  
	run();  
}