C语言指针练习

题目如下：

有1个班，3个学生，各学4门课，计算总平均分以及输出第n个学生的成绩

示例代码如下：

#include <stdio.h>

int main()
{
    void average(float *p,int n);
    void search(float(*p)[4],int n);
    float score[3][4] = {{65,67,70,60},{80,87,90,81},{90,99,100,98}};
    average(*score,12);
    search(score,2);


    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 = sum+(*p);
    }
    aver = sum/n;
    printf("average=%5.2f\n",aver);
}

void search(float (*p)[4],int n){
    int i;
    printf("The score of No.%d are:\n",n);
    for (i = 0; i < 4; i++) {
        printf("%5.2f\t",*(*(p+n)+i));
    }
    printf("\n");
}