在这个简单的猜数字游戏中,scanf()在main函数第二次使用时无法工作。希望有人能解释为什么它不起作用,以及如何修复它。
关于如何简化这段代码的任何提示都将不胜感激。谢谢!
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
int guessed = 0;
int guesses = 0;
int total_guesses = 0;
int range_top = 1;
int generate_random_number()
{
srand(time(NULL));
return (rand() % range_top);
}
void take_guess(int num)
{
int guess;
printf("what is your guess: ");
scanf("%i",&guess);
if(guess == num)
{
guessed = 1;
}
else if(guess>num)
{
printf("Your guess was too high,\n");
}
else
{
printf("Your guess was too low.\n");
}
}
int main(void)
{
printf("This is a game in C\n");
printf("Would you like to play? (y/n): ");
char play;
scanf("%c",&play);
while(play == 'y')
{
printf("I am thinking of a number between 0 and %i\n",range_top);
int num = generate_random_number();
while(guessed ==0)
{
take_guess(num);
guesses++;
}
printf("It took you ");
printf("%i",guesses);
printf(" guesses to win.\n");
printf("Would you like to play again? (y/n): ");
scanf("%c",&play);
guessed = 0;
guesses = 0;
total_guesses+=guesses;
}
printf("goodbye!");
}
srand
移至generate_random_number
之外。它只需要被调用一次。 - Eugene Sh.int generate_random_number()
是旧式写法。如果函数声明的参数列表为空,应该使用(void)
。 - too honest for this sitescanf
。http://c-faq.com/stdio/scanfprobs.html - jamesdlin