#include <stdio.h>
#include<malloc.h>

struct student
{
    char name[100];
    int age;
    float score;
};
void inputstudent(struct student * pss,int len)
{
    int i;
    for(i=0;i<len;++i)
    {
        printf("请输入第%d名学生的信息：\n",i+1);
        printf("name=");
        scanf("%s\n",&pss[i].name);

        printf("age=");
        scanf("%d\n",&pss[i].age);

        printf("score=");
        scanf("%f\n",&pss[i].score);
    }
}

void sort(struct student * st,int len)
{
    int i,j;
    struct student t;
    for(i=0;i<len-1;++i)
    {
        for(j=0;j<len-1-i;++j)
        {
            if(st[j].score>st[j+1].score)
            {    t=st[j];
                st[j]=st[j+1];
                st[j+i]=t;
            }
        }
    }
}

 void outputstudent(struct student * su,int len)
{
    int j;
    for(j=0;j<len;++j)
    {
        printf("name=%s",su[j].name);
        printf("name=%d",su[j].age);
        printf("name=%f",su[j].score);
    }
}

int main(void)
{
    int len;
    struct student * s;
    printf("请输入学生的个数：\n");
    printf("len=");
    scanf("%d",&len);
    s=(struct student *)malloc(len*sizeof(struct student));
    inputstudent(s,len);
        sort(s,len);
    outputstudent(s,len);
    return 0;
}

我很无奈

/*请找不同*/
#include <stdio.h>
#include<malloc.h>

struct student
{
    char name[100];
    int age;
    float score;
};
void inputstudent(struct student * pss,int len)
{
    int i;
    for(i=0;i<len;++i)
    {
        printf("请输入第%d名学生的信息：\n",i+1);
        printf("name=");
        scanf("%s",pss[i].name);

        printf("age=");
        scanf("%d",&pss[i].age);

        printf("score=");
        scanf("%f",&pss[i].score);
    }
}

void sort(struct student * st,int len)
{
    int i,j;
    struct student t;
    for(i=0;i<len-1;++i)
    {
        for(j=0;j<len-1-i;++j)
        {
            if(st[j].score>st[j+1].score)
            {    t=st[j];
                st[j]=st[j+1];
                st[j+i]=t;
            }
        }
    }
}

 void outputstudent(struct student * su,int len)
{
    int j;
    for(j=0;j<len;++j)
    {
        printf("name=%-10s",su[j].name);
        printf("age=%-5d",su[j].age);
        printf("score=%-8f",su[j].score);
        putchar(10);
    }
}

int main(void)
{
    int len;
    struct student * s;
    printf("请输入学生的个数：\n");
    printf("len=");
    scanf("%d",&len);
    s=(struct student *)malloc(len*sizeof(struct student));
    inputstudent(s,len);
        sort(s,len);
    outputstudent(s,len);
    return 0;
}

//下次请交代你要优化的地方和你认为的问题以及你的想法。
//比如这个程序明显输入有问题，这个你要交代清楚，然后其他的细节问题。唉，真是没办法，先好好学学怎么提问吧。