课程设计：学生成绩管理系统！400行C语言源码分享
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近期很多小伙伴私信我说，临近期末考试，需要一份课程设计：学生成绩管理系统来交作业！
今天，它来了！400行源码的学生管理系统，只需要你正确移植到你的电脑上，即可使用，这还不点个关注+收藏嘛！
源码分享：
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
char filename[20] = { 0 };
typedef struct Student{
int num;
char name[10];
float chinese;
float math;
float english;
float total;
struct Student* next;
}STU;
int MainInterface() {
int key;
system("cls");
printf("\\n\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t| 欢迎来到学生成绩管理系统 |\\n");
printf("\\t\\t\\t|===========================================|\\n");
printf("\\t\\t\\t| |\\n");
printf("\\t\\t\\t| 1.录入学员 |\\n");
printf("\\t\\t\\t| 2.查找学员 |\\n");
printf("\\t\\t\\t| 3.删除学员 |\\n");
printf("\\t\\t\\t| 4.修改成绩 |\\n");
printf("\\t\\t\\t| 5.打开文件 |\\n");
printf("\\t\\t\\t| 0.退出系统 |\\n");
printf("\\t\\t\\t| |\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t请选择:");
scanf("%d", &key);
return key;
}
STU* CreateList(){
STU* p = (STU*)malloc(sizeof(STU));
if (p != NULL)
p->next = NULL;
return p;
}
int NumIsExist(STU* plist, int num) {
plist = plist->next;
while (plist != NULL)
{
if (plist->num == num)
return 1;
plist = plist->next;
}
return 0;
}
void InsertStu(STU* plist){
system("cls");
printf("\\n\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t| 正在录入学员信息 |\\n");
printf("\\t\\t\\t=============================================\\n");
STU* p = plist;
int count = 0;
printf("\\t\\t\\t请问需要添加多少学员:");
scanf("%d",&count);
if (count <= 0)
return;
for (int i = 0; i < count; i++) {
STU* pnew = (STU*)malloc(sizeof(STU));
if (pnew == NULL) return;
printf("\\t\\t\\t请输入学生学号:");
scanf("%d", &pnew->num);
while (1)
{
if (NumIsExist(plist, pnew->num))
{
printf("\\t\\t\\t学号重复,请重新输入学号:");
scanf("%d", &pnew->num);
}
else
break;
}
printf("\\t\\t\\t请输入学生姓名:");
scanf("%s", pnew->name);
printf("\\t\\t\\t请输入语文成绩:");
scanf("%f", &pnew->chinese);
printf("\\t\\t\\t请输入数学成绩:");
scanf("%f", &pnew->math);
printf("\\t\\t\\t请输入英语成绩:");
scanf("%f", &pnew->english);
pnew->total = pnew->chinese + pnew->math + pnew->english;
pnew->next = NULL;
//头插法? 尾插法? 任意位置插入?
p = plist;
while (p->next != NULL)
{
if (pnew->num < p->next->num)
{
pnew->next = p->next;
p->next = pnew;
break;
}
p=p->next;
}
p->next = pnew;
}
}
void SerchByNum(STU* plist){
int num = 0;
system("cls");
printf("\\n\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t| 正在查找学员信息 |\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t请输入学员学号:");
scanf("%d", &num);
while (plist != NULL)
{
if (plist->num == num)
{
printf("\\t\\t\\t学号\\t姓名\\t语文\\t数学\\t英语\\t总分\\n");
printf("\\t\\t\\t%d\\t%s\\t%.1f\\t%.1f\\t%.1f\\t%.1f\\n",
plist->num, plist->name, plist->chinese,
plist->math, plist->english,plist->total);
printf("\\t\\t\\t");
system("pause");
return;
}
plist = plist->next;
}
printf("\\t\\t\\t没有找到该学生!!\\n");
printf("\\t\\t\\t");
system("pause");
}
void SerchByName(STU* plist){
char name[10] = { 0 };
system("cls");
printf("\\n\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t| 正在查找学员信息 |\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t请输入学员姓名:");
scanf("%s", &name);
int n = 1;
while (plist != NULL)
{
if (strcmp(name, plist->name) == 0)
{
if (n) {
printf("\\t\\t\\t学号\\t姓名\\t语文\\t数学\\t英语\\t总分\\n");
n = 0;
}
printf("\\t\\t\\t%d\\t%s\\t%.1f\\t%.1f\\t%.1f\\t%.1f\\n",
plist->num, plist->name, plist->chinese,
plist->math, plist->english, plist->total);
}
plist = plist->next;
}
if (n)
printf("\\t\\t\\t没有找到该学生!!\\n");
printf("\\t\\t\\t");
system("pause");
}
void SerchAllStu(STU* plist) {
plist = plist->next;
system("cls");
printf("\\n\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t| 正在查找学员信息 |\\n");
printf("\\t\\t\\t=============================================\\n");
if (plist == NULL)
{
printf("\\t\\t\\t没有学员信息!\\n");
printf("\\t\\t\\t");
system("pause");
return;
}
printf("\\t\\t\\t学号\\t姓名\\t语文\\t数学\\t英语\\t总分\\n");
while (plist != NULL)
{
printf("\\t\\t\\t%d\\t%s\\t%.1f\\t%.1f\\t%.1f\\t%.1f\\n",
plist->num, plist->name, plist->chinese,
plist->math, plist->english, plist->total);
plist = plist->next;
}
printf("\\t\\t\\t");
system("pause");
}
void SerchMain(STU* plist) {
int key;
do {
system("cls");
printf("\\n\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t| 正在查找学员信息 |\\n");
printf("\\t\\t\\t|===========================================|\\n");
printf("\\t\\t\\t| |\\n");
printf("\\t\\t\\t| 1.按学号查找 |\\n");
printf("\\t\\t\\t| 2.按姓名查找 |\\n");
printf("\\t\\t\\t| 3.查看所有项 |\\n");
printf("\\t\\t\\t| 0.返回主菜单 |\\n");
printf("\\t\\t\\t| |\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t请选择:");
scanf("%d", &key);
switch (key) {
case 1:SerchByNum(plist); break;
case 2:SerchByName(plist); break;
case 3:SerchAllStu(plist); break;
}
} while (key != 0);
}
void DeleteStu(STU* plist){
int num = 0;
char key = '\\0';
STU* pre = plist;
STU* p = plist->next;
system("cls");
printf("\\n\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t| 正在准备删除信息 |\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t请输入需要删除的学号:");
scanf("%d", &num);
while (p != NULL)
{
if (p -> num == num)
{
printf("\\t\\t\\t学号\\t姓名\\t语文\\t数学\\t英语\\t总分\\n");
printf("\\t\\t\\t%d\\t%s\\t%.1f\\t%.1f\\t%.1f\\t%.1f\\n",
p->num, p->name, p->chinese,
p->math, p->english, p->total);
printf("\\t\\t\\t是否删除? [Y/N] : ");
getchar();
scanf("%c",&key);
if (key == 'N' || key == 'n')
return;
else if(key == 'Y' || key == 'y')
{
pre->next = p->next;
free(p);
p = NULL;
printf("\\t\\t\\t删除成功!!\\n");
printf("\\t\\t\\t");
system("pause");
return;
}
}
pre = pre->next;
p = p->next;
}
printf("\\t\\t\\t没有找到该学生!!\\n");
printf("\\t\\t\\t");
system("pause");
}
void ModifyStu(STU* plist) {
int num = 0;
STU* p = plist->next;
char key = '\\0';
system("cls");
printf("\\n\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t| 正在准备修改信息 |\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t请输入需要修改的学号:");
scanf("%d", &num);
while (p != NULL)
{
if (num == p->num)
{
printf("\\t\\t\\t学号\\t姓名\\t语文\\t数学\\t英语\\t总分\\n");
printf("\\t\\t\\t%d\\t%s\\t%.1f\\t%.1f\\t%.1f\\t%.1f\\n",
p->num, p->name, p->chinese,
p->math, p->english, p->total);
printf("\\t\\t\\t是否修改? [Y/N] : ");
getchar();
scanf("%c", &key);
if (key == 'N' || key == 'n')
return;
else if (key == 'Y' || key == 'y')
{
printf("\\n\\t\\t\\t==============\\n");
printf("\\t\\t\\t1.修改姓名\\n\\t\\t\\t2.修改语文\\n\\t\\t\\t3.修改数学\\n\\t\\t\\t4.修改英语\\n\\t\\t\\t0.返回\\n");
printf("\\t\\t\\t==============\\n");
printf("\\t\\t\\t请选择:");
getchar();
scanf("%c", &key);
if (key == '1') {
printf("\\t\\t\\t新的姓名:");
scanf("%s", p->name);
}
else if (key == '2') {
printf("\\t\\t\\t新的语文成绩:");
scanf("%f", &p->chinese);
}
else if (key == '3') {
printf("\\t\\t\\t新的数学成绩:");
scanf("%f", &p->math);
}
else if (key == '4') {
printf("\\t\\t\\t新的英语成绩:");
scanf("%f", &p->english);
}
else if (key == '0') return;
printf("\\t\\t\\t修改后的信息如下:\\n");
printf("\\t\\t\\t学号\\t姓名\\t语文\\t数学\\t英语\\t总分\\n");
printf("\\t\\t\\t%d\\t%s\\t%.1f\\t%.1f\\t%.1f\\t%.1f\\n",
p->num, p->name, p->chinese,
p->math, p->english, p->total);
printf("\\t\\t\\t");
system("pause");
return;
}
}
p = p->next;
}
printf("\\t\\t\\t没有找到该学员!!\\n");
printf("\\t\\t\\t");
system("pause");
}
STU* OpenStuFile() {
char c;
STU* pstu = NULL;
STU* ptem = NULL;
FILE* fp = NULL;
while (1){
system("cls");
printf("\\n\\n");
printf("\\n\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t| 欢迎来到学生成绩管理系统 |\\n");
printf("\\t\\t\\t| |\\n");
printf("\\t\\t\\t| 【源码联系群中老师】 |\\n");
printf("\\t\\t\\t| |\\n");
printf("\\t\\t\\t| 【源码联系群中老师】 |\\n");
printf("\\t\\t\\t| |\\n");
printf("\\t\\t\\t| 【源码联系群中老师】 |\\n");
printf("\\t\\t\\t| |\\n");
printf("\\t\\t\\t| 【学编程，来顿开】 |\\n");
printf("\\t\\t\\t| |\\n");
printf("\\t\\t\\t=============================================\\n");
printf("\\t\\t\\t请输入班级(如:3年2班):");
scanf("%s", filename);
fp = fopen(filename, "rb+");
if (fp != NULL) break; //打开成功
printf("\\t\\t\\t文件不存在!是否创建该文件? [Y/N] : ");
getchar();
scanf("%c", &c);
if (c == 'Y' || c == 'y')
{
fp = fopen(filename, "wb+");
if (fp != NULL)
break;
else
continue;
}
else
continue;
}
pstu = CreateList();
while (1)
{
STU* pnew = (STU*)malloc(sizeof(STU));
pnew->next = NULL;
if (fscanf(fp, "%d\\t%s\\t%f\\t%f\\t%f\\t%f\\n",
&pnew->num, pnew->name, &pnew->chinese,
&pnew->math, &pnew->english, &pnew->total) == EOF)
{
free(pnew);
pnew = NULL;
break;
}
//头插法? 尾插法? 任意位置插入?
ptem = pstu;
while (ptem->next != NULL)
{
if (pnew->num < ptem->next->num)
{
pnew->next = ptem->next;
ptem->next = pnew;
break;
}
ptem = ptem->next;
}
ptem->next = pnew;
}
fclose(fp);
return pstu;
}
void CloseStuFile(STU* plist){
FILE* fp = NULL;
plist = plist->next;
//只写方式打开文件
if ((fp = fopen(filename, "wb+")) == NULL)
{
printf("打开文件失败!");
}
else
{
//遍历链表输出到文件
while (plist != NULL)
{
fprintf(fp,"%d\\t%s\\t%.1f\\t%.1f\\t%.1f\\t%.1f\\n",
plist->num, plist->name, plist->chinese,
plist->math, plist->english, plist->total);
plist = plist->next;
}
}
fclose(fp);
}
int main(){
int key = -1;
STU* pList = NULL;
pList = OpenStuFile(); //初始化链表
while (key != 0) {
key = MainInterface();
switch (key) {
case 1: InsertStu(pList); break;
case 2: SerchMain(pList); break;
case 3: DeleteStu(pList); break;
case 4:ModifyStu(pList); break;
case 0:CloseStuFile(pList); break;
}
}
return 0;
}好了，赶紧去完成你的课程设计吧！不要忘了留下你的关注和点赞哟~
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