用c语言实现在n行n列（n<=10） 的二维整数组中，按照以下要求选出一个数，首先从每行中选出最大数，再从选出的n个最大数中选出最小数

好的，以下是用 C 语言实现的代码：

#include <stdio.h>

int main() {
    int n;
    printf("Please enter the order of the matrix (n <= 10): ");
    scanf("%d", &n);

    int matrix[n][n];
    printf("Please input the elements of the matrix:\n");
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            scanf("%d", &matrix[i][j]);
        }
    }

    int max[n], min_max;
    for (int i = 0; i < n; i++) {
        max[i] = matrix[i][0];
        for (int j = 1; j < n; j++) {
            if (matrix[i][j] > max[i]) {
                max[i] = matrix[i][j];
            }
        }
    }

    min_max = max[0];
    for (int i = 1; i < n; i++) {
        if (max[i] < min_max) {
            min_max = max[i];
        }
    }

    printf("The minimum of maxima number is %d.\n", min_max);

    return 0;
}

运行结果示例：

Please enter the order of the matrix (n <= 10): 3
Please input the elements of the matrix:
9 2 3
4 5 8
7 7 1
The minimum of maxima number is 7.

希望能够帮到您！