用指针实现二维数组作为参数-求几个班级的平均成绩

二维数组作为参数传递时，一般都会用以下的这两种方式：

#include <stdio.h>void average(float *p,int n);void search(float (*p)[4],int n);int main(){    float score[3][4]={{65,67,70,60},{80,87,90,81},{90,99,100,98}};    average(*score,12);    search(score,2);    printf("**score is :%2.0f\n",**score) ;    return 0;}void average(float *p,int n){    float *p_end;    float sum=0,aver;    p_end=p+n-1;    for(;p<=p_end;p++)        sum+=*p;    aver=sum/n;    printf("average is %5.2f\n",aver);}void search(float (*p)[4],int n){    int i;    printf("The score of N0.%d student are:\n",n);    for(i=0;i<4;i++)        printf("%5.2f ",*(*(p+n)+i));    printf("\n");}