不会赢的游戏1
游戏规则：输入整数范围，根据系统给出提示进行猜数，每猜一次减少一次机会，猜中或者机会耗尽则一轮游戏结束。
游戏示例：输入范围0-4，你可以猜数1,2,3，系统提示有一次猜数机会
如果你猜1，如果猜中，系统显示“恭喜你，猜对了”，否则将显示“猜错了，正确结果为XXX”。
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <time.h>
int main(void){
int guess_cishu=0;
int guess_cishu1=0; int guess_cishu2=0;
int up_limit=0;
int down_limit=100;
int caishu=1;
int result;
char cmd[10];
double random_number;
while(1){
srand((unsigned)time(NULL)*100);
printf("输入start开始游戏，输入end结束游戏\n");
scanf("%s", cmd); //用fgets会出问题，why
if(memcmp(cmd, "end", 3)==0) break;
else if(memcmp(cmd, "start", 5)==0){
memset(cmd, 0, 10);
random_number = (double)rand()/RAND_MAX;
printf("请输入猜数范围\n");
printf("范围上限:");
scanf("%d", &up_limit);
printf("范围下限:");
scanf("%d", &down_limit);
if(up_limit>=down_limit-2){
printf("范围不合理，请重新输入\n");
continue;
}
guess_cishu = (int)(log10((double)down_limit-up_limit-1)/log10((double)2));
printf("你有%d次猜的机会\n", guess_cishu);
while(1){
printf("输入要猜的数字:");
scanf("%d", &caishu);
if(caishu>=down_limit||caishu<=up_limit){
printf("输入的数字非范围内\n");
continue;
}
else{
random_number = (double)rand()/RAND_MAX;
guess_cishu --;
guess_cishu1 = (int)(log10((double)caishu-up_limit-1)/log10((double)2));
guess_cishu2 = (int)(log10((double)down_limit-caishu-1)/log10((double)2));
if(guess_cishu==guess_cishu1&&guess_cishu==guess_cishu2){
if(random_number<0.5) up_limit=caishu;
else down_limit=caishu;
}
else if(guess_cishu==guess_cishu1){
down_limit = caishu;
}
else{
up_limit = caishu;
}
/*
if(caishu>(up_limit+down_limit)/2){
down_limit = caishu;
}
else if(caishu<(up_limit+down_limit)/2){
up_limit = caishu;
}
else{
if(random_number<0.5) up_limit = caishu;
else down_limit = caishu;
}*/
if(guess_cishu>0){
printf("你猜错了，你还可以再猜%d次，范围是%d-%d\n", guess_cishu, up_limit, down_limit);
}
else break;
}
}
random_number = (double)rand()/RAND_MAX;
result = floor(random_number*(down_limit-up_limit-1))+up_limit+1;
printf("哈哈，猜错了，正确答案是%d\n", result); //用随机数输出结果
}
else{
printf("未知指令\n");
memset(cmd, 0, 10);
}
}
printf("用户结束游戏\n");
system("pause");
return 0;
}
我们来看结果：
