C语言及程序设计提高例程-36 多维数组作函数参数

我就是我 2022-01-27 14:13 160阅读 0赞

[贺老师教学链接][Link 1] [C语言及程序设计提高][C] [本课讲解][Link 2]

用多维数组名作函数参数

#include <stdio.h>    
    int max_value(int array[][4]);
    int main( )
    {
        int a[3][4]= {
        {11,32,45,67},{22,44,66,88},{15,72,43,37}};
        printf("max value is %d\n", max_value(a));
        return 0;
    }
    int max_value(int array[][4])
    {
        int i,j,max;
        max=array[0][0];
        for( i=0; i<3; i++)
            for(j=0; j<4; j++)
                if(array[i][j]>max)
                    max=array[i][j];
        return max;
    }

工程中更普遍的做法：行数作为形参

#include <stdio.h>
    int max_value(int array[][4], int);
    int main( )
    {
        int a[3][4]= {
        {11,32,45,67},{22,44,66,88},{15,72,43,37}};
        printf("max value is %d\n", max_value(a, 3));
        return 0;
    }
    int max_value(int array[][4], int n)
    {
        int i,j,max;
        max=array[0][0];
        for( i=0; i<n; i++)
            for(j=0; j<4; j++)
                if(array[i][j]>max)
                    max=array[i][j];
        return max;
    }

例 3个学生4门课，计算总平均分，并输出第n个学生成绩

#include <stdio.h>
    void average(int *p, int n);
    void search(int (*p)[4], int n);
    int main()
    {
        int score[3][4]=
        {
            {65,67,79,60},{80,87,90,81},
            {90,99,100,98}
        };
        average(*score,12);
        search(score,2);
        return 0;
    }
    void average(int *p, int n)
    {
        int *p_end, sum=0,aver;
        p_end=p+n-1;
        for(; p<=p_end; p++)
            sum=sum+(*p);
        aver=sum/n;
        printf("average=%4d\n",aver);
    }
    void search(int  (*p)[4], int n)
    {
        int i;
        printf("No.%d  :",n);
        for(i=0; i<4; i++)
            printf("%4d",*(*(p+n)+i));
        printf("\n");
    }

[Link 1]: http://blog.csdn.net/sxhelijian/article/details/8001601
[C]: http://blog.csdn.net/sxhelijian/article/details/43225811
[Link 2]: http://edu.csdn.net/course/detail/456/4829