ask.c

C.Game.Programming.For.Dummies.原码

#include <stdio.h>
#include <conio.h>
#define TRUE 1

void main(int argc,char *argv[])
{
	int x;
	char c;

	if(argc<2)		//no options typed
	{
		printf("Here is the ASK program's format:\n");
		printf("ASK [Text]\n");
		printf("\"Text\" is displayed, then the PC\n");
		printf("waits for Y or N to be pressed. Y\n");
		printf("returns an ERRORLEVEL of 1; N is 2.\n");
		exit(0);
	}

/* Print all the arguments */

	for(x=1;x<argc;x++)
		printf("%s\x20",argv[x]);

	printf("(Y or N)?");			//print the YorN prompt

	while(TRUE)
	{
		c=getch();

		if(c=='y' || c=='Y')
		{
			printf("Y\n");		//Display their input
			exit(1);			//ERRORLEVEL=1
		}
		if(c=='n' || c=='N')
		{
			printf("N\n");
			exit(2);			//ERRORLEVEL=2
		}
	}
}