C語(yǔ)言學(xué)生信息管理系統(tǒng)6

1、一.應(yīng)用程序名稱：Student.exe二.應(yīng)用程序的主題、設(shè)計(jì)目的：應(yīng)用程序的主題是管理好學(xué)生成績(jī)，設(shè)計(jì)目的是進(jìn)一步掌握和實(shí)踐C語(yǔ)言編程。三、應(yīng)用程序簡(jiǎn)介：1.基本結(jié)構(gòu)：2.基本內(nèi)容：編寫一個(gè)成績(jī)管理程序。每個(gè)學(xué)生的信息包含學(xué)生學(xué)號(hào)、姓名、性別和6門課程成績(jī)。(1)學(xué)生信息創(chuàng)建(順序存儲(chǔ)和鏈?zhǔn)酱鎯?chǔ)都可)；(2)各個(gè)信息的輸入與輸出；(3)按總成績(jī)實(shí)現(xiàn)升序排列；(4)按學(xué)號(hào)查詢成績(jī)；(5)輸出各門課程成績(jī)高于90和低于60的學(xué)生的姓名及該門課程的成績(jī)。3.運(yùn)行環(huán)境： 本程序使用Visual C+ 2008編譯器制作，在windows 7 64bit系統(tǒng)中成功運(yùn)行，windows XP也可正常運(yùn)

2、行。 4.測(cè)試結(jié)果：經(jīng)過測(cè)試，所要求的內(nèi)容基本上達(dá)到，個(gè)人認(rèn)為比較好的地方是篩選和排序，不足之處是不明白存儲(chǔ)方面的知識(shí)，以及程序流程的認(rèn)識(shí)。5.實(shí)驗(yàn)心得：參考了許多網(wǎng)上資料，存儲(chǔ)方面的知識(shí)依然不懂，部分代碼都不是自己寫的，而且看不太懂，所以程序流程自己都不太清楚，但是，經(jīng)過老師驗(yàn)收代碼，說了很多問題之后，明白了那些不知道也不明白的問題，學(xué)到了很多東西,更好的理解了語(yǔ)言的編程，明白了看代碼與寫代碼的實(shí)際區(qū)別，以后要好好努力。附錄：/ 學(xué)生信息管理.cpp : 定義控制臺(tái)應(yīng)用程序的入口點(diǎn)。/#include "stdio.h"#include "stdafx.h&qu

3、ot;#include "string.h"#include "stdlib.h"/*定義學(xué)生結(jié)構(gòu)體*/struct Student char ID20,Name20,Sex20; float Chinese/*語(yǔ)文*/; float Math/*數(shù)學(xué)*/; float English/*英語(yǔ)*/; float Physics/*物理*/; float Chemical/*化學(xué)*/; float Biological/*生物*/; float Add/*總分值*/;/*聲明學(xué)生數(shù)組及學(xué)生數(shù)量*/struct Student students100;int

4、 num=0;/*求總成績(jī)值*/float Add(struct Student stu) return stu.Chinese+stu.Math+stu.English+stu.Physics+stu.Chemical+stu.Biological;/*通過學(xué)號(hào)返回?cái)?shù)組下標(biāo)*/int Student_SearchByIndex(char id) int i; for (i=0;i<num;i+) if (strcmp(studentsi.ID,id)=0) return i; return -1;/*顯示單條學(xué)生記錄*/void Student_DisplaySingle(int in

5、dex) printf("%8s%6s%6s%8s%8s%8s%8s%8s%8s%8sn","學(xué)號(hào)","姓名","性別","語(yǔ)文","數(shù)學(xué)","英語(yǔ)","物理","化學(xué)","生物","總分"); printf(" -n"); printf("%8s%6s%6s%8.1f%8.1f%8.1f%8.1f%8.1f%8.1fn",student

6、sindex.ID,studentsindex.Name,studentsindex.Sex, studentsindex.Chinese,studentsindex.Math,studentsindex.English, studentsindex.Physics,studentsindex.Chemical,studentsindex.Biological,studentsindex.Add);/*插入學(xué)生信息*/void Student_Insert() while(1) printf("請(qǐng)輸入學(xué)號(hào):"); scanf("%s",&stud

7、entsnum.ID); getchar(); printf("請(qǐng)輸入姓名:"); scanf("%s",&studentsnum.Name); getchar(); printf("請(qǐng)輸入性別:"); scanf("%s",&studentsnum.Sex); getchar(); printf("請(qǐng)輸入語(yǔ)文成績(jī):"); scanf("%f",&studentsnum.Chinese); getchar(); printf("請(qǐng)輸入數(shù)學(xué)成績(jī)

8、:"); scanf("%f",&studentsnum.Math); getchar(); printf("請(qǐng)輸入英語(yǔ)成績(jī):"); scanf("%f",&studentsnum.English); getchar(); printf("請(qǐng)輸入物理成績(jī):"); scanf("%f",&studentsnum.Physics); getchar(); printf("請(qǐng)輸入化學(xué)成績(jī):"); scanf("%f",&

9、studentsnum.Chemical); getchar(); printf("請(qǐng)輸入生物成績(jī):"); scanf("%f",&studentsnum.Biological); getchar(); studentsnum.Add=Add(studentsnum); num+; printf("是否繼續(xù)?(y/n)"); if (getchar()='n') system("cls"); break; /*修改學(xué)生信息*/void Student_Modify() while(1) ch

10、ar id20; int index; printf("請(qǐng)輸入要修改的學(xué)生的學(xué)號(hào):"); scanf("%s",&id); getchar(); index=Student_SearchByIndex(id); if (index=-1) printf("學(xué)生不存在!n"); else printf("你要修改的學(xué)生信息為:n"); Student_DisplaySingle(index); printf("- 請(qǐng)輸入新值-n"); printf("請(qǐng)輸入學(xué)號(hào):");

11、 scanf("%s",&studentsindex.ID); getchar(); printf("請(qǐng)輸入姓名:"); scanf("%s",&studentsindex.Name); getchar(); printf("請(qǐng)輸入性別:"); scanf("%s",&studentsindex.Sex); getchar(); printf("請(qǐng)輸入語(yǔ)文成績(jī):"); scanf("%f",&studentsindex.Ch

12、inese); getchar(); printf("請(qǐng)輸入數(shù)學(xué)成績(jī):"); scanf("%f",&studentsindex.Math); getchar(); printf("請(qǐng)輸入英語(yǔ)成績(jī):"); scanf("%f",&studentsindex.English); getchar(); printf("請(qǐng)輸入物理成績(jī):"); scanf("%f",&studentsindex.Physics); getchar(); printf(&quo

13、t;請(qǐng)輸入化學(xué)成績(jī):"); scanf("%f",&studentsindex.Chemical); getchar(); printf("請(qǐng)輸入生物成績(jī):"); scanf("%f",&studentsindex.Biological); getchar(); studentsindex.Add=Add(studentsindex); printf("是否繼續(xù)?(y/n)"); if (getchar()='n') system("cls"); bre

14、ak; /*刪除學(xué)生信息*/void Student_Delete() int i; while(1) char id20; int index; printf("請(qǐng)輸入要?jiǎng)h除的學(xué)生的學(xué)號(hào):"); scanf("%s",&id); getchar(); index=Student_SearchByIndex(id); if (index=-1) printf("學(xué)生不存在!n"); else printf("你要?jiǎng)h除的學(xué)生信息為:n"); Student_DisplaySingle(index); prin

15、tf("是否真的要?jiǎng)h除?(y/n)"); if (getchar()='y') for (i=index;i<num-1;i+) studentsi=studentsi+1; num-; getchar(); printf("是否繼續(xù)?(y/n)"); if (getchar()='n') system("cls"); break; /*按學(xué)號(hào)查詢*/void Student_Select() while(1) char id20; int index; printf("請(qǐng)輸入要查詢的學(xué)

16、生的學(xué)號(hào):"); scanf("%s",&id); getchar(); index=Student_SearchByIndex(id); if (index=-1) printf("學(xué)生不存在!n"); else printf("你要查詢的學(xué)生信息為:n"); Student_DisplaySingle(index); printf("是否繼續(xù)?(y/n)"); if (getchar()='n') system("cls"); break; /*按總分值排序

17、*/void Student_SortByAdd() int i,j; struct Student tmp; for (i=0;i<num;i+) for (j=1;j<num-i;j+) if (studentsj-1.Add<studentsj.Add) tmp=studentsj-1; studentsj-1=studentsj; studentsj=tmp; /*顯示學(xué)生信息*/void Student_Display() int i; printf("%8s%6s%6s%8s%8s%8s%8s%8s%8s%8sn","學(xué)號(hào)"

18、,"姓名","性別","語(yǔ)文","數(shù)學(xué)","英語(yǔ)","物理","化學(xué)","生物","總分"); printf(" -n"); for (i=0;i<num;i+) printf("%8s%6s%6s%8.1f%8.1f%8.1f%8.1f%8.1f%8.1f%8.1fn",studentsi.ID,studentsi.Name,studentsi.Sex, student

19、si.Chinese,studentsi.Math,studentsi.English,studentsi.Physics, studentsi.Chemical,studentsi.Biological,studentsi.Add); system("pause"); system("cls");/*選出優(yōu)秀學(xué)生信息*/void Student_90A()int i;printf("%10s%10s%10s%10s%10sn","科目","學(xué)號(hào)","姓名","性別

20、","分?jǐn)?shù)");printf(" -n");for (i=0;i<num;i+) if (studentsi.Chinese>=90) printf("%10s%10s%10s%10s%10.1fn","語(yǔ)文",studentsi.ID,studentsi.Name,studentsi.Sex,studentsi.Chinese); printf("n");void Student_90B()int i;for (i=0;i<num;i+) if (studentsi

21、.Math>=90) printf("%10s%10s%10s%10s%10.1fn","數(shù)學(xué)",studentsi.ID,studentsi.Name,studentsi.Sex,studentsi.Math);printf("n");void Student_90C()int i;for (i=0;i<num;i+) if (studentsi.English>=90) printf("%10s%10s%10s%10s%10.1fn","英語(yǔ)",studentsi.ID,s

22、tudentsi.Name,studentsi.Sex,studentsi.English);printf("n");void Student_90D()int i;for (i=0;i<num;i+) if (studentsi.Physics>=90) printf("%10s%10s%10s%10s%10.1fn","物理",studentsi.ID,studentsi.Name,studentsi.Sex,studentsi.Physics);printf("n");void Student_9

23、0E()int i;for (i=0;i<num;i+) if (studentsi.Chemical>=90) printf("%10s%10s%10s%10s%10.1fn","化學(xué)",studentsi.ID,studentsi.Name,studentsi.Sex,studentsi.Chemical);printf("n");void Student_90F()int i;for (i=0;i<num;i+) if (studentsi.Biological>=90) printf("%10

24、s%10s%10s%10s%10.1fn","生物",studentsi.ID,studentsi.Name,studentsi.Sex,studentsi.Biological);printf("n");/*選出不及格學(xué)生信息*/void Student_60A()int i;printf("%10s%10s%10s%10s%10sn","科目","學(xué)號(hào)","姓名","性別","分?jǐn)?shù)");printf(" -n&q

25、uot;);for (i=0;i<num;i+) if (studentsi.Chinese<60)printf("%10s%10s%10s%10s%10.1fn","語(yǔ)文",studentsi.ID,studentsi.Name,studentsi.Sex,studentsi.Chinese);printf("n");void Student_60B()int i;for (i=0;i<num;i+) if (studentsi.Math<60) printf("%10s%10s%10s%10s%1

26、0.1fn","數(shù)學(xué)",studentsi.ID,studentsi.Name,studentsi.Sex,studentsi.Math);printf("n");void Student_60C()int i;for (i=0;i<num;i+) if (studentsi.English<60) printf("%10s%10s%10s%10s%10.1fn","英語(yǔ)",studentsi.ID,studentsi.Name,studentsi.Sex,studentsi.English)

27、;printf("n");void Student_60D()int i;for (i=0;i<num;i+) if (studentsi.Physics<60) printf("%10s%10s%10s%10s%10.1fn","物理",studentsi.ID,studentsi.Name,studentsi.Sex,studentsi.Physics);printf("n");void Student_60E()int i;for (i=0;i<num;i+) if (studentsi.C

28、hemical<60) printf("%10s%10s%10s%10s%10.1fn","化學(xué)",studentsi.ID,studentsi.Name,studentsi.Sex,studentsi.Chemical);printf("n");void Student_60F()int i;for (i=0;i<num;i+) if (studentsi.Biological<60) printf("%10s%10s%10s%10s%10.1fn","生物",student

29、si.ID,studentsi.Name,studentsi.Sex,studentsi.Biological);printf("n");/*將學(xué)生信息從文件讀出*/void IO_ReadInfo() FILE *fp; int i; if (fp=fopen("Database.txt","rb")=NULL) printf("不能打開文件!n"); return; if (fread(&num,sizeof(int),1,fp)!=1) num=-1; else for(i=0;i<num;i+

30、) fread(&studentsi,sizeof(struct Student),1,fp); fclose(fp);/*將學(xué)生信息寫入文件*/void IO_WriteInfo() FILE *fp; int i; if (fp=fopen("Database.txt","wb")=NULL) printf("不能打開文件!n"); return; if (fwrite(&num,sizeof(int),1,fp)!=1) printf("寫入文件錯(cuò)誤!n"); for (i=0;i<num;i+) if (fwrite(&studentsi,sizeof(struct Student),1,fp)!=1) printf("寫入文件錯(cuò)誤!n"); fclose(fp);/*主程序*/int main() int choice; IO_ReadInfo(); while(1) /*主菜單*/ printf("ntt- 學(xué)生成績(jī)管理系統(tǒng)-nn"); printf("ttt