## 实验7 指针的使用 ### 实验任务 7-1.c 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1526661-20210527-1622100609740) 7-2.c 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1526661-20210527-1622101793507) 7-3.c 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1526661-20210527-1622103956563) 7-4.c 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1526661-20210603-1622708247364) 7-5.c 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1526661-20210603-1622708515591) 7-6.c 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1526661-20210603-1622709250820) 7-7.c 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1526661-20210610-1623310413180) ### 上机练习 ##### 1、输入三个整数，按由小到大的顺序输出。 - 代码 ```c #include int main() { int t,a,b,c; scanf("%d%d%d",&a,&b,&c); if(a int main() { int a[10]; int i; float aver=0.00; printf("请输入十个数:\n"); for(i=0;i<10;i++) { scanf("%d",&a[i]); } for(i=0;i<10;i++) { aver = aver+a[i]; } aver = aver/10; printf(":%2f\n",aver); return 0; } ``` - 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1526661-20210610-1623312955589) ##### 3、**练习使用排序方法和对本章内容进行复习**。 - 代码 ```c #include #include #include int input(int n) { int* pi, i; pi = (int*)calloc(10, sizeof(int)); for (i = 0;i < 10;i++) { scanf("%d", pi + i); } return pi; } int bubble(int* p,int n) { int i = 0, j = 0, k = 0, temp = 0; for (i = 0;i < n - 1;i++) { for(j=0;j p[j + 1]) { temp = p[j]; p[j] = p[j + 1]; p[j + 1] = temp; } } } void select_sort(int* pj, int n) { int i, j, k, index; for (i = 0;i < n;i++) { k = i; for (j = i + 1;j < n;j++) { if (pj[j] > pj[k]) k = j; } if (k != j) { index = pj[j]; pj[i] = pj[k]; pj[k] = index; } } } int main() { int *p,i=0,avg,*pj; printf("请输入数据\n"); p = input(10); pj = (int*)calloc(10, sizeof(int)); pj = p; bubble(p, 10); printf("选择法从大到小排列结果：\n"); for (i = 0;i < 10;i++) printf("%d ", pj[i]); printf("\n"); printf("冒泡法从小到大排列结果：\n"); for (i = 0;i < 10;i++) printf("%d ", p[i]); free(p); } ``` - 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1526661-20210630-1625054515055)

“程序设计基础II”实验报告