如何录入学生信息，搜索学生名，修改成绩，列出成绩表，升序降序排列

Question

#include "stdio.h"
#define NC 100
struct studentRed { //定义学生记录，即对应表格的一行
char studName[20]; //姓名对应第一列的Student Name
char studID[20]; //学号对应第二列的Student ID 用20个字符编码，可用字母做学号
float compProgram; // score for Computer programming 用浮点数可输入小数分数
float physEducat; //score for Computer programming
float commResech; //score for Communication and Research
float averageScore; //average score
}*p,students[NC]={
{"John","zy001",84,86,78,0},
{"Xiaoming","zy002",77,82,90,0},
{"Xiaohua","zy003",79,82,85,0},
{"Jianguo","zy004",84,86,78,0},
{"Xiaodong","zy005",60,55,40,0},
};

void insertAvgScore(struct studentRed *stu,int length){
for (int i = 0; i <length ;++i) {
stu[i].averageScore=(stu[i].compProgram+stu[i].physEducat+stu[i].commResech)/3;
}
}
void printStudentInfo(struct studentRed *stu,int length){
printf("Name\t\tID\t\tComputer\tPhysical\tCommunication\tAverages\n");
for(int i=0;i<length;i++){
printf("%-12s%s",stu[i].studName,stu[i].studID,stu[i].compProgram,stu[i].physEducat,stu[i].commResech,stu[i].averageScore);
}

}

int main(){
insertAvgScore(students,5);
printStudentInfo(students,5);
return 0;
}

Answer 1

这是输入一个的

#include "stdio.h"
#define NC 100
struct studentRed   //定义学生记录，即对应表格的一行
{
    char studName[20]; //姓名对应第一列的Student Name
    char studID[20]; //学号对应第二列的Student ID 用20个字符编码，可用字母做学号
    float compProgram; // score for Computer programming 用浮点数可输入小数分数
    float physEducat; //score for Computer programming
    float commResech; //score for Communication and Research
    float averageScore; //average score
}*p,students[NC]=
{
    {"John","zy001",84,86,78,0},
    {"Xiaomin","zy002",77,82,90,0},
    {"Xiaohua","zy003",79,82,85,0},
    {"Jianguo","zy004",84,86,78,0},
    {"Xiaodon","zy005",60,55,40,0},
};

void insertAvgScore(struct studentRed *stu,int length)
{
    for (int i = 0; i <length ; ++i)
    {
        stu[i].averageScore=(stu[i].compProgram+stu[i].physEducat+stu[i].commResech)/3;
    }
}
void printStudentInfo(struct studentRed *stu,int length)
{
    printf("Name\tID\tComputer\tPhysical\tCommunication\tAverages\n");
    for(int i=0; i<length; i++)
    {
        printf("%s\t%s\t%.2f\t%.2f\t%.2f\t%.2f\n",stu[i].studName,stu[i].studID,stu[i].compProgram,stu[i].physEducat,stu[i].commResech,stu[i].averageScore);
    }
}
void input(struct studentRed *stu,int i)
{
    //for(int i=0; i<length; i++)
    {
        scanf("%s",stu[i].studName);
        getchar();
        scanf("%s",stu[i].studID);
        scanf("%f%f%f",&stu[i].compProgram,&stu[i].physEducat,&stu[i].commResech);
    }
}
int main()
{
    insertAvgScore(students,5);
    printStudentInfo(students,5);
    input(students,5);
    printStudentInfo(students,6);
    return 0;
}