1、精選優質文檔-傾情為你奉上十二硬幣判別代碼 人間客制作國外流行的12個硬幣問題：12硬幣中可能有一個假的，而且不知道假幣比真幣重還是輕，給你一架天平，天平沒有示數，只能判斷是平衡還是不平，且只準稱三次，讓你判斷是否有假幣；如果有，找出來。解法思想如下：第一步：任選8個比較，如選： 比 一、若一樣重，則假幣在中，第二步： 比1.若一樣重，則可能的假幣為。則第三步： vs 1)若一樣重，則沒有假幣；2)不一樣重，則假幣為：如果(1)>(12)，則假幣輕，反之，假幣重； 2.若重，則第三步： 比 1)若一樣重，則假幣為（較輕）2)不一樣重，則假幣為、中較重者3.若輕，則第三步： 比 1)若一樣

2、重，則假幣為（較重）2)不一樣重，則假幣為、中較輕者二、若重，則第二步： 比 1.若一樣重，則假幣在中，第三步： 比 假幣為、中較輕者2.若端較重，則假幣在中，第三步：比 1)若一樣重，則假幣為（較輕）2)不一樣重，則假幣為中較重者3.若端較重，則假幣在中，第三步： 比 1)若一樣重，則假幣為（較輕）2)不一樣重，則假幣為、中較重者三、若輕，則與上面類似，第二步：比 1.若一樣重，則假幣在中，第三步： 比 假幣為、中較重者2.若端較輕，則假幣在中，第三步： 比 1)若一樣重，則假幣為（較重）2)不一樣重，則假幣為中較輕者3.若端較輕，則假幣在中，第三步： 比 1)若一樣重，則假幣為（較重）2)

3、不一樣重，則假幣為、中較輕者在科技發達的時代，我們都不愿意去做這樣繁瑣的比較，而是想借助于計算機的威力，下面給大家介紹一種方法，可以在很短的時間內完成中比較。當然，這類問題轉化到編程上去后，主要考查的是大家的編程思想，而不再是12硬幣問題本身了，因為12個硬幣的重量需要大家自己去輸入，這些數據只是為了檢驗大家程序的正確與否。下面是該問題的代碼：#include <stdio.h>void main()int i;float a12;for(i=0;i<12;i+)scanf("%f",&ai);if(a0+a1+a2+a3=a4+a5+a6+a7)

4、 if(a0+a1+a2=a8+a9+a10) if(a8=a11) printf("There is no special coin!n"); else if(a8>a11) printf("There is a special coin:%f(12) and it's lighter than others.n",a11); else printf("There is a special coin:%f(12) and it's heavier than others.n",a11); else if(a0+

5、a1+a2>a8+a9+a10) if(a8=a9) printf("There is a special coin:%f(11) and it's lighter than others.n",a10); else if(a8>a9) printf("There is a special coin:%f(10) and it's lighter than others.n",a9); else printf("There is a special coin:%f(9) and it's lighter th

6、an others.n",a8); else if(a8=a9) printf("There is a special coin:%f(11) and it's heavier than others.n",a10); else if(a8>a9) printf("There is a special coin:%f(9) and it's heavier than others.n",a8); else printf("There is a special coin:%f(10) and it's he

7、avier than others.n",a9); else if(a0+a1+a2+a3>a4+a5+a6+a7) if(a0+a2+a5=a1+a4+a8) if(a6=a7) printf("There is a special coin:%f(4) and it's heavier than others.n",a3); else if(a6>a7) printf("There is a special coin:%f(8) and it's lighter than others.n",a7); else

8、printf("There is a special coin:%f(7) and it's lighter than others.n",a6); else if(a0+a2+a5>a1+a4+a8) if(a0=a2) printf("There is a special coin:%f(5) and it's lighter than others.n",a4); else if(a0>a2) printf("There is a special coin:%f(1) and it's heavier

9、than others.n",a0); else printf("There is a special coin:%f(3) and it's heavier than others.n",a2); else if(a1>a8) printf("There is a special coin:%f(2) and it's heavier than others.n",a1); if(a5<a8) printf("There is a special coin:%f(6) and it's light

10、er than others.n",a5); else if(a0+a2+a5=a1+a4+a8) if(a6=a7) printf("There is a special coin:%f(4) and it's lighter than others.n",a3); else if(a6>a7) printf("There is a special coin:%f(7) and it's heavier than others.n",a6); else printf("There is a special co

11、in:%f(8) and it's heavier than others.n",a7); else if(a0+a2+a5<a1+a4+a8) if(a0=a2) printf("There is a special coin:%f(5) and it's heavier than others.n",a4); else if(a0>a2) printf("There is a special coin:%f(3) and it's lighter than others.n",a2); else printf("There is a special coin:%f(1) and it's lighter than others.n",a0); else if(a1<a8) printf("There is a spe