随机生成3个数，创建3个指针指向这3个数，不改变这3个数，从大到小显示。

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题目：随机生成3个数，创建3个指针指向这3个数，不改变这3个数，从大到小显示，具体实现如下：

#include<stdlib.h>#include<stdio.h>#include<time.h>void main(){int a = 0;int b = 0;int c = 0;srand(time(NULL));a = 3; //rand() % 10;b = 2; //rand() % 10;c = 1;// rand() % 10;int * pa = &a;int * pb = &b;int * pc = &c;//从小到大int * pMin = pa;if (*pb < *pMin){pMin = pb;}if (*pc < *pMin){pMin = pc;}printf("数据从小到大:\n");if (pMin == pa){printf("%d", *pMin);if(*pc < * pb){printf("%d", *pc);printf("%d", *pb);}else{printf("%d", *pb);printf("%d", *pc);}}else if (pMin == pb){printf("%d", *pMin);if (*pc < *pa){printf("%d", *pc);printf("%d", *pa);}else{printf("%d", *pa);printf("%d", *pc);}}else if (pMin == pc){printf("%d", *pMin);if (*pa < *pb){printf("%d", *pa);printf("%d", *pb);}else{printf("%d", *pb);printf("%d", *pa);}}else{printf("指针无效.\n");return;}printf("\n");//数据从大到小int * pMax = pa;if (*pb > *pMax){pMax = pb;}if (*pc > *pMax){pMax = pc;}printf("数据从大到小:\n");if (pMax == pa){printf("%d", *pMax);if (*pc < *pb){printf("%d", *pb);printf("%d", *pc);}else{printf("%d", *pc);printf("%d", *pb);}}else if (pMax == pb){printf("%d", *pMax);if (*pc < *pa){printf("%d", *pa);printf("%d", *pc);}else{printf("%d", *pc);printf("%d", *pa);}}else if (pMax == pc){printf("%d", *pMax);if (*pa < *pb){printf("%d", *pb);printf("%d", *pa);}else{printf("%d", *pa);printf("%d", *pb);}}else{printf("指针无效.\n");return;}printf("\n");system("pause");return;}

运行效果如图1所示：

图1 运行效果

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