C语言练习-学生信息管理系统

题目要求：

学生信息管理系统
struct studentInfo
{
　　int id;
　　char name[128];
　　int age;
　　char sex;
　　int c_score;
　　int cpp_score;
　　int oc_scpre;
};

struct StudentInfo Arr[100]={};
int count=0;

show
1. 插入用户信息
scnaf("%s%d", Arr[count].age);
count++;

2. 显示用户信息
　　(1)输入id,按id显示信息
　　(2)输入name，按name显示信息

3. 显示所有用户信息

4. 删除用户信息
　　(1)输入id,按id删除信息
　　(2)输入name，按name删除信息

5. 统计
　　c-score 平均值
　　cpp-score-平均值
　　oc-score平均值
　　平均值成绩最高分

input: 1-6
switch()
{

}

 

我的代码：

#include <stdio.h>

#include <string.h>

typedef struct studentInfo{

    int id;

    char name[128];

    int age;

    char sex;

    int c_score;

    int cpp_score;

    int oc_score;

}Student;

Student student[1000];

int pos;



void print_info(int p){

    printf("%d\t%s\t%d\t%c\t%d\t%d\t%d\n",

    student[p].id, student[p].name, student[p].age, student[p].sex,

    student[p].c_score, student[p].cpp_score, student[p].oc_score);

}



void input();

void show(){

    printf("\n\n\n");

    printf("-----------------管理信息系统---------------------------\n");

    printf("|							|\n");

    printf("|							|\n");

    printf("|		1.插入用户信息				|\n");

    printf("|		2.显示用户信息				|\n");

    printf("|		3.显示所有用户信息  			|\n");

    printf("|		4.删除用户信息				|\n");

    printf("|		5.统计信息  				|\n");

    printf("|		6.退出系统   				|\n");

    printf("|							|\n");

    printf("--------------------------------------------------------|\n");

    printf("请输入数字:(1-6)\n");

    input();

}



void insert(){

    char name[128];

    int i = 0;

    ++pos;

    printf("Please input user id :\n");

    scanf("%d", &student[pos].id);

    printf("Please input user name :\n");

    scanf("%s", name);

    strcpy(student[pos].name, name);

    printf("Please input user age :\n");

    scanf("%d", &student[pos].age);

    printf("Please input user sex :\n");

    scanf(" %c", &student[pos].sex);

    printf("Please input user C语言分数 :\n");

    scanf("%d", &student[pos].c_score);

    printf("Please input user C++分数 :\n");

    scanf("%d", &student[pos].cpp_score);

    printf("Please input user objective-c 分数 :\n");

    scanf("%d", &student[pos].oc_score);

    printf("插入成功！\n");

    show();

}



void showuser(){

    printf("1>输入id, 按ID显示信息\n");

    printf("2>输入name, 按name显示信息\n");

    printf("请输入序号:(1-2)\n");

    int i, id, num;

    char name[128];

    scanf("%d", &num);

    if(num == 1){

	printf("请输出ID:\n");

	scanf("%d", &id);

	for(i=1;i<=pos;++i)

	    if(id == student[i].id){

		printf("ID\t名字\t年龄\t性别\tC\tC++\tOC\n");

		print_info(i);

	    }

    }

    if(num == 2){

	printf("请输入用户名字:\n");

	scanf("%s", name);

	for(i=1;i<=pos;++i)

	    if(!strcmp(name, student[i].name)){

		printf("ID\t名字\t年龄\t性别\tC\tC++\tOC\n");

		print_info(i);

	    }

    }

    printf("按任意键返回菜单\n");

    getchar();

    getchar();

    show();

}



void showalluser(){

    int i = 0;

    printf("ID\t名字\t年龄\t性别\tC\tC++\tOC\n");

    for(i=1;i<=pos;++i){

	if(student[i].id == 0) continue;

	print_info(i);

    }

    show();

}



void delete(){

    printf("1>输入id, 按ID删除信息\n");

    printf("2>输入name, 按name删除信息\n");

    printf("请输入序号:(1-2)\n");

    int i, id, num; 

    char name[128];

    scanf("%d", &num);

    if(num == 1){

	printf("请输入ID\n");

	scanf("%d", &id);

	for(i=1;i<=pos;++i)

	    if(id == student[i].id){

		student[i].id = 0;

		printf("删除成功！\n");

	    }

    }

    if(num == 2){

	printf("请输入用户名字:\n");

	scanf("%s", name);

	for(i=1;i<=pos;++i)

	    if(!strcmp(name, student[i].name)){

		student[i].id = 0;

		printf("删除成功！\n");

	    }

    }

    show();

}





void sum(){

    printf("1>输入C语言分数的平均值信息\n");

    printf("2>输入C++语言分数的平均值信息\n");

    printf("3>输入objective-C语言分数的平均值信息\n");

    printf("请输入序号:(1-3)\n");

    int num, i, sum, cnt;

    scanf("%d", &num);

    if(num == 1){

	cnt = 0;

	sum = 0;

	for(i=1;i<=pos;++i){

	    if(student[i].id == 0) continue;

	    cnt++;

	    sum+=student[i].c_score;

	}

	printf("C语言评分分数 ：%g\n", sum/(cnt*1.0));

    }

    if(num == 2){

	cnt = 0;

	sum = 0;

	for(i=1;i<=pos;++i){

	    if(student[i].id == 0) continue;

	    cnt++;

	    sum+=student[i].cpp_score;

	}

	printf("C++语言评分分数 ：%g\n", sum/(cnt*1.0));

    }

    if(num == 3){

	cnt = 0;

	sum = 0;

	for(i=1;i<=pos;++i){

	    if(student[i].id == 0) continue;

	    cnt++;

	    sum+=student[i].oc_score;

	}

	printf("objective-C语言评分分数 ：%g\n", sum/(cnt*1.0));

    }

    if(num == 4){

	cnt = 0;

	sum = 0;

	for(i=1;i<=pos;++i){

	    if(student[i].id == 0) continue;

	    cnt++;

	    sum+=student[i].oc_score;

	}

	printf("objective-C语言评分分数 ：%f\n", sum/(cnt*1.0));

    }

    show();

}



void _quit(){}



void input(){

    int num;

    scanf("%d", &num); 

    switch(num){

	case 1: insert(); 

		break;

	case 2:	showuser();

		break;

	case 3:	showalluser();

		break;

	case 4:	delete();

		break;

	case 5:	sum();

		break;

	case 6: _quit();

		break;

    }

}



int main(){

    pos = 0;

    show();

    return 0;

}

　　

 

 运行结果 截图：