10.13.cpp

c入门代码大全

//有一个班，3个学生，各学4门课，计算总平均分数以及第n个学生的成绩
#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);
    getchar();
    getchar();
} 
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)/*p是指向有4个元素的一维数组的指针*/
{
     int i;
     printf("the score of No.%d are:\n",n);
     
     for(i=0;i<4;i++)
      printf("%5.2f",*(*(p+n)+i));
}