C语言练习—使用结构体指针实现成绩计算操作

#include <stdio.h>
#include <stdlib.h>
struct Student
{
	int score;
    char *name;
};//分号

//初始化
struct Student* initStu(int len)
{
	
    int i;
    
    //struct Student stus[5];
    //struct Student *p = stus;
    struct Student *p = (struct Student *)malloc(len*sizeof(struct Student));
	for(i=0;i<len;i++)
    {
		printf("请输入第%d个学生的名字：\n",i+1);
        p->name = (char *)malloc(128);
        scanf("%s",p->name);
        printf("请输入第%d个学生的成绩：\n",i+1);
        scanf("%d",&p->score);
        p++;
    }
    return p-len;
}

//输出
struct Student* printMessige(struct Student *p,int len)
{
	int i;
    for(i=0;i<len;i++)
    {
		printf("第%d个学生：名字:%s,成绩:%d.\n",i+1,p->name,p->score);
        p++;
    }
}

//计算最高成绩
struct Student* maxScore(struct Student *p,int len)
{
	int i;
    struct Student *max;
    max = p;
    for(i=0;i<len;i++)
    {	
        if(max->score < p->score)
        {
			max = p;
        }
		p++;
	}
    return max;
}

//计算最低成绩
struct Student* minScore(struct Student *p,int len)
{
	int i;
    struct Student *min;
    min = p;
    for(i=0;i<len;i++)
    {	
        if(min->score > p->score)
        {
			min = p;
        }
		p++;
	}
    return min;
}

//计算平均成绩
float average(struct Student *p,int len)
{
	float avg;
    int i;
    float sum = 0;
    for(i=0;i<len;i++)
    {
		sum = sum + p->score;
        p++;
	}
    avg = sum/len;
    return avg;
}

//找人
int findSomeon(struct Student *p, int len, char *name)
{
	int i;
    for(i=0;i<len;i++)
    {
		if(strcmp(name, p->name) == 0)
        {
			return 1;
        }
        p++;
    }
    return -1;
}
int main()
{	
    float avg;
    int len = 0;
    printf("请输入要存储的学生数:\n");
    scanf("%d",&len);
    
    struct Student *max = NULL;
    struct Student *min = NULL;
	struct Student *pstu = initStu(len);
    
    printMessige(pstu,len);
    
    max = maxScore(pstu,len);
    printf("最高分的学生姓名为:%s.成绩为：%d\n",max->name,max->score);
    
    min = minScore(pstu,len);
    printf("最低分的学生姓名为:%s.成绩为：%d\n",min->name,min->score);
    
    avg = average(pstu,len);
    printf("平均分为：%.2f\n",avg);
    
    //printf("请输入要查询的人：\n");
    //scanf("%s",Pname);
    if(findSomeon(pstu, len, "Zhangsan") == -1)
    {	
		printf("不存在此人！\n");
    }else{
		
        printf("存在此人！\n");
    }
	system("pause");
	return 0;
}