guess.c

C.Game.Programming.For.Dummies原码

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define RANGE 100			//set guessing range
#define TRIES 6				//give 'em six tries to guess

int rnd(int range);
void seedrnd(void);

void main()
{
	int guessme,guess,t;

	seedrnd();			//seed the randomizer
	guessme=rnd(RANGE)+1;		//get the number to guess

	printf("GUESS!?!\nGuess the random number.\n");
	printf("I'm thinking of a number \
between 1 and %i.\n",RANGE);
	printf("Can you guess it in %i tries?\n",TRIES);

	for(t=1;t<=TRIES;t++)		//give them TRIES tries
	{
		printf("Guess #%i:",t);
		scanf("%i",&guess);	//get their guess

		if(guess==guessme)	//They guess correctly
		{
			printf("You got it!\n");
			break;		//stop here
		}
		else if(guess<guessme)	//guess is too low
			printf("Too low!\n");
		else          		//guess is too high
			printf("Too high!\n");
	}				//this ends the for loop

	printf("The answer was %i.\n",guessme);
}

/*
Random number generator function. Coughs up a random number
in the range of zero to "range." Refer to Lesson 5.7.
*/

int rnd(int range)
{
	int r;

	r=rand()%range;		//spit up random num.
	return(r);
}

/*
Random number seeding program. This makes the
number "more" random.
*/

void seedrnd(void)
{
	srand((unsigned)time(NULL));
}