猜随机数冷热游戏输出
猜随机数冷热游戏输出
提问于 2014-07-18 04:58:10
试图用代码块c语言构建一个程序，以便：
- 从
1 to 100中生成一个随机的秘密数字，并要求用户猜出这个数字。 - 如果用户猜测正确，则打印猜测是正确的。
- 首先猜测一下，如果它不正确，它应该说热。
- 告诉用户，如果他的猜测越来越接近这个秘密，他就会变得越来越热。
- 或者如果他的猜测离得更远。
- 游戏继续进行，直到猜到秘密号码为止。
我当前的程序在猜测是热还是冷方面给出了不正确的输出，也不确定我应该把(和{放在哪里，如果有的话，或者在哪里使用"if"和"else if"。如果不是太多，请解释变化。
#include <stdio.h>
#include <stdlib.h>
#define MAX_VAL 100
int main(void)
{
int next_guess, first_guess, secret, distance;
srand(time(0));
secret = 1 + rand()%MAX_VAL;
distance = (secret - first_guess);
while (first_guess != secret) {
printf(" enter your guess from (1 to %d)?\n", MAX_VAL);
scanf("%d", &first_guess);
{
if (first_guess == secret)
printf("You guessed correctly!\n");
if (first_guess != secret)
printf("Your guess was hot enter your next guess from (1 to %d)?\n", MAX_VAL);
scanf("%d", &next_guess);
if (next_guess == secret)
printf("You guessed correctly!\n");
if ((next_guess-secret) < distance)
printf("Your guess was hot,");
if ((next_guess-secret) >= distance)
printf("Your guess was cold,");
}
}
return 0;
}回答 4
Stack Overflow用户
回答已采纳
发布于 2014-07-18 06:07:03
下面是代码，有几件事你需要知道:首先，你需要比较数字之间距离的绝对值，因为当你减法得到距离时，你可以得到一个负数。
while (first_guess != secret)第二，你不应该比较一个你还没有读过的值。
不需要将{}放在IFs之外，您需要在if语句之后使用它。也试着改进一下你的压痕。
最后，在回答您的问题时，最重要的建议是，如果您有一个检查某些条件的if，则不需要使用另一个if来检查opossite条件--如果只有两个条件是正的，只需使用else，如果需要的话，在第一个else中使用其他的if else。
示例：
错误的方式：
if (first_guess == secret)
printf("You guessed correctly!\n");
if (first_guess != secret) {
printf("Your guess was hot enter your next guess from (1 to %d)?\n", MAX_VAL);
scanf("%d", &next_guess);
}
right way:
if (first_guess == secret)
printf("You guessed correctly!\n");
else {
printf("Your guess was hot enter your next guess from (1 to %d)?\n", MAX_VAL);
scanf("%d", &next_guess);
}解决办法是：
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define MAX_VAL 100
#define ABSOLUTE(a) (((a)>0)?(a):(-a))
int main() {
srand(time(0));
int secret,new,newdistance,olddistance,ok;
secret = 1 + rand()%MAX_VAL;
printf ("secret is %d",secret);
char clean;
do {
printf(" enter your guess from (1 to %d)?\n", MAX_VAL);
ok=scanf ("%d",&new);
while ((clean=getchar())!='\n');
} while(ok!=1);
newdistance = (secret - new);
do {
if (new == secret)
printf("You guessed correctly!\n");
else {
do {
printf("enter your guess from (1 to %d)?\n", MAX_VAL);
ok=scanf ("%d",&new);
while ((clean=getchar())!='\n');
} while(ok!=1);
if (new == secret)
printf("You guessed correctly!\n");
else {
olddistance=newdistance;
newdistance=secret-new;
if (ABSOLUTE(newdistance) < ABSOLUTE(olddistance))
printf("Your guess was hot,");
else
printf("Your guess was cold,");
}
}
} while (new!= secret);
return (0);
}我添加了行while ((clean=getchar())!='\n');，以确保用户的每个输入都被正确读取。
如果宏导致问题，这里有一个实现，它使用一个函数来计算绝对值，而不是宏：
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define MAX_VAL 100
int absolute (int a) {
return (a>0?a:-a);
}
int main() {
srand(time(0));
int secret,new,newdistance,olddistance,ok,flagfirstguess;
flagfirstguess=1;
secret = 1 + rand()%MAX_VAL;
printf ("secret is %d",secret);
char clean;
do {
printf(" enter your guess from (1 to %d)?\n", MAX_VAL);
ok=scanf ("%d",&new);
while ((clean=getchar())!='\n');
} while(ok!=1);
newdistance = (secret - new);
do {
if (new == secret)
printf("You guessed correctly!\n");
else {
if (flagfirstguess==1) {
printf("Your guess was hot enter your next guess from (1 to %d)?\n", MAX_VAL);
flagfirstguess=0;
}
else {
do {
printf("enter your guess from (1 to %d)?\n", MAX_VAL);
ok=scanf ("%d",&new);
while ((clean=getchar())!='\n');
} while(ok!=1);
if (new == secret)
printf("You guessed correctly!\n");
else {
olddistance=newdistance;
newdistance=secret-new;
if (absolute(newdistance) < absolute(olddistance))
printf("Your guess was hot,");
else
printf("Your guess was cold,");
}
}
}
} while (new!= secret);
return (0);
}Stack Overflow用户
发布于 2014-07-18 05:56:16
你的代码
if (first_guess != secret)
printf("Your guess was hot enter your next guess from (1 to %d)?\n",
MAX_VAL);
scanf("%d", &next_guess);如果-语句只会影响printf-语句，而不会影响scanf语句，则不会执行您认为它所做的操作。你应该把语句用大括号括起来。
if (first_guess != secret)
{
printf("Your guess was hot enter your next guess from (1 to %d)?\n",
MAX_VAL);
scanf("%d", &next_guess);
}对于键盘输入，我不太喜欢sc如f()，所以我将使用fget()，在这里指定最大值缓冲区，然后将值转换为整数，或者使用scanf()进行转换。
char buffer[32];
fgets( buffer, sizeof(buffer), stdin );
next_guess = atoi( buffer );
or
char buffer[32];
fgets( buffer, sizeof(buffer), stdin );
sscanf( buffer, "%d", &next_guess );您应该始终初始化C中的所有变量
int next_guess = 0, first_guess = 0, secret, distance = 0;Stack Overflow用户
发布于 2014-07-18 05:44:54
我不知道为什么这个游戏你需要两个猜测。这将是我的版本：
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define MAX_VAL 100
int main(void)
{
int guess, secret, distance;
srand(time(0));
secret = 1 + rand()%MAX_VAL;
while (true)
{
printf(" enter your guess from (1 to %d)?\n", MAX_VAL);
scanf("%d", &guess);
if (guess == secret)
{
printf("You guessed correctly!\n");
break;
}
else
{
distance = guess-secret;
if (distance>0)
printf("Your guess was hot,");
else
printf("Your guess was cold,");
}
}
return 0;
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/24817489
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