用c++编写通过调用函数，找出任意三数最小值程序。

下面是一个示例代码，其中 fun 函数接收一个整数数组和数组的大小作为参数，返回数组中最小的值。 ```c++ #include <iostream> int fun(int arr[], int size){ int min = arr[0]; for(int i=1; i<size; i++){ if(arr[i] < min){ min = arr[i]; } } return min; } int main(){ int arr[] = {3, 5, 1, 8, 2}; int size = sizeof(arr)/sizeof(arr[0]); int min = fun(arr, size); std::cout << "The minimum value in the array is: " << min << std::endl; return 0; } ``` 输出结果为： ``` The minimum value in the array is: 1 ```

值调用方式实现： ```c #include <stdio.h> void getMaxMinAvg(int a, int b, int c, int *max, int *min, float *avg); int main() { int a, b, c, max, min; float avg; printf("请输入三个整数：\n"); scanf("%d %d %d", &a, &b, &c); getMaxMinAvg(a, b, c, &max, &min, &avg); printf("最大值为：%d\n", max); printf("最小值为：%d\n", min); printf("平均值为：%.2f\n", avg); return 0; } void getMaxMinAvg(int a, int b, int c, int *max, int *min, float *avg) { *max = a; *min = a; *avg = (a + b + c) / 3.0; if (b > *max) { *max = b; } if (c > *max) { *max = c; } if (b < *min) { *min = b; } if (c < *min) { *min = c; } } ``` 引用调用方式实现： ```c #include <stdio.h> void getMaxMinAvg(int a, int b, int c, int &max, int &min, float &avg); int main() { int a, b, c, max, min; float avg; printf("请输入三个整数：\n"); scanf("%d %d %d", &a, &b, &c); getMaxMinAvg(a, b, c, max, min, avg); printf("最大值为：%d\n", max); printf("最小值为：%d\n", min); printf("平均值为：%.2f\n", avg); return 0; } void getMaxMinAvg(int a, int b, int c, int &max, int &min, float &avg) { max = a; min = a; avg = (a + b + c) / 3.0; if (b > max) { max = b; } if (c > max) { max = c; } if (b < min) { min = b; } if (c < min) { min = c; } } ``` 全局变量方式实现： ```c #include <stdio.h> int a, b, c, max, min; float avg; void getMaxMinAvg(); int main() { printf("请输入三个整数：\n"); scanf("%d %d %d", &a, &b, &c); getMaxMinAvg(); printf("最大值为：%d\n", max); printf("最小值为：%d\n", min); printf("平均值为：%.2f\n", avg); return 0; } void getMaxMinAvg() { max = a; min = a; avg = (a + b + c) / 3.0; if (b > max) { max = b; } if (c > max) { max = c; } if (b < min) { min = b; } if (c < min) { min = c; } } ```