学生信息管理系统C语言

1、#i nclude "stdio.h"#include "string.h"#i nclude "stdlib.h"#defi ne M 10int num。/ 计数struct stude ntchar xuehao10。/学号char name10 。/姓名char sex8。/ 性别char birth20。/ 出生年月char jiguan30 。/籍贯char tel30 。/ 电话int score。/ 成绩studentM。char headline80 。/ 全局变量void read1(>FILE *fp。/文

2、件指针int i=0。fp=fopen("jz0112.txt","r"> 。/打开文件if(fp=NULL>printf("不能找到文件，请检查！n">。return。fgets(headline,80,fp> 。/ 读第一行的函数puts(headline>。while(!feof(fp>>/判断文件是否结束for(i=0 o i<M。i+>fsca nf(fp,"%s%s%s%s%s%s%d",stude nti.xuehao,stude nti. nam

3、e,stude nti.sex,stude nti.birth,stude nti.jigua n, stude nti.tel,&stude nti.score>。i+。/fscanf读两个空白字符之间的字符num=i。fclose(fp>。/ 关闭文件for(i=0。 ivnum。 i+>prin tf(%10s%-8s%6s%16s%16s%16s%6dn",stude nti.xuehao,stude nti. name,stude nti.sex,stude nti.birth,stude nti.jigua n, stude nti.tel,st

4、ude nti.score>。void fin d_xuehao(>/ 按学号查询char xuehao10。int i。int flag=0。printf("请输入学号:">。scanf("%s",xuehao> 。for(i=0。 ivnum。 i+>if(strcmp(xuehao,stude nti.xuehao>=0>flag=1。prin tf("%-10s%-8s%6s%16s%16s%16s%6dn",stude nti.xuehao,stude nti. name,stude

5、 nti.sex,stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.score>。break。if(flag=0>printf("n 无此信息 n">。void find_name(>/ 按姓名查询char name8。int i。int flag=0。printf("请输入姓名:">。scanf("%s", name> 。for(i=0。 ivnum。 i+>if(strcmp( name,stude nti .n ame&

6、gt;=0>flag=1。prin tf(%10s%-8s%6s%16s%16s%16s%6dn",stude nti.xuehao,stude nti. name,stude nti.se x,stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.score>。break。if(flag=0>printf("n 无此信息 n">。void all(>/显示全部int i。for(i=0。i<M。i+>prin tf("%-10s%-8s%6s%16

7、s%16s%16s%6dn",stude nti.xuehao,stude nti. name,stude nti.sex,stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.score>。void fin d(>int b。printf("n*n">oprintf(" 1按学号查询2按姓名查询3显示全部 4退出n"> printf("n*n">printf("请选择：">。scanf("%d&

8、quot;,&b> 。switch(b>case 1:find_xuehao(> 。break。case 2:find_name(>。break。case 3:all(>。break。case 4:return 。void sort_name(>/ 按姓名排序char nameM12,t12。int i,j。for(i=0。i<M。i+>strcpy (n amei,stude nti. name> 。for(j=1。j<M-1。j+>for(i=0。i<M-j。i+>if(strcmp( namei, na

9、mei+1>>0>strcpy(t,namei> 。strcpy( namei, namei+1>。strcpy( namei+1,t> 。for(i=0 o i<M。i+>for(j=0 o j<M o j+>if(strcmp( namei,stude ntj. name>=0>prin tf(%10s%-8s%6s%16s%16s%16s%6dn",stude ntj.xuehao,stude ntj. name,stude ntj.sex,stude ntj.birth,stude ntj.jigua n

10、, stude ntj.tel,stude ntj.score>。void sort_score(>/ 按分数排序int i,j,t,aM。for(i=0。i<M。i+>ai=studenti.score。for(j=1 o j<M-1。j+>for(i=0。i<M-j。i+>if(ai<ai+1>t=ai。ai=ai+1。ai+1=t。for(i=0 o i<M。i+>for(j=0。j<M。j+>if(ai=stude ntj.score>prin tf("n%-10s%-8s%6s%14s

11、%16s%16s%6d",stude ntj.xuehao,stude ntj. name,stude ntj.sex, stude ntj.birth,stude ntj.jigua n, stude ntj.tel,stude ntj.score>。void sort(>/ 排序int b。printf("n*n">oprintf(" 1按姓名排序2按分数排序3退出n"> printf("n*n">printf("请选择：">。scanf("%d"

12、;,&b> 。switch(b>case 1:sort_name(> 。break。case 2:sort_score(>。break。case 3:return。void add(>/ 添加int i。int flag=0。char add10。printf("请输入你要修改的学生的学号："> scanf("%s",add>。for(i=0。ivnum。i+>if(strcmp(stude nti.xuehao,add>=0>flag=1。printf("此信息已存在，不能添

13、加！n">。prin tf(%10s%-8s%6s%14s%16s%16s%6d",stude nti.xuehao,stude nti. name,stude nti.sex, stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.score>。break。if(flag=0>printf("n无此学生信息，请添加信息："。sca nf("%s%s%s%s%s%s%d",stude ntnu m.xuehao,stude ntnu m. name,st

14、ude n t nu m.sex,stude ntnu m.birth,stude ntnu m.jigua n, stude nt nu m.tel,&stude nt nu m.score> 。nu m+。for(i=0。 ivnum。 i+>prin tf("n%-10s%-8s%6s%14s%16s%16s%6d",stude nti.xuehao,stude nti. name,stude nti.sex, stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.score>。

15、void Delete_name(>/ 按姓名删除int i。int flag=0。char name10。printf("请输入要删除的姓名：">。scanf("%s", name> 。for(i=0。 ivnum。 i+>if(strcmp(stude nti. name, name>=0>flag=1。for(。 ivnum-1 。 i+>studenti=studenti+1。printf("此信息存在，将被删除。n">。for(i=0 。 i<num-1 。 i+>

16、prin tf("n%-10s%-8s%6s%14s%16s%16s%6d",stude nti.xuehao,stude nti. name,stude nti.sex, stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.score>。if(flag=0>printf("n无此学生信息，请确认！n">。void Delete_xuehao(>/ 按学号删除int i。int flag=0。char xuehao10。printf("请输入要删除的学号：

17、">。scanf("%s",xuehao> 。for(i=0。 ivnum。 i+>if(strcmp(stude nti.xuehao,xuehao>=0>flag=1。for(。 ivnum-1 。 i+>studenti=studenti+1。printf("此信息存在，将被删除。n">。for(i=0。 i<num-1 。 i+>prin tf("n%-10s%-8s%6s%14s%16s%16s%6d",stude nti.xuehao,stude nti. n

18、ame,stude nti.sex, stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.score>。if(flag=0>printf("n无此学生信息，请确认！n">。void Delete(>/ 删除int b。prin tf("n*n">printf(" 1按姓名删除2按学号删除3退出n">prin tf("n*n">printf("请选择：">。scanf("%d

19、",&b> 。switch(b>case 1:Delete_name(> 。break。case 2:Delete_xuehao(> 。break。case 3:return。void modify(>/ 修改int i。int flag=0。char modify10。printf("请输入你要修改的学生的学号：">。scanf("%s",modify> 。for(i=0。 ivnum。 i+>if(strcmp(stude nti.xuehao,modify>=0>flag

20、=1。printf("学号姓名 性别 出生年月 籍贯 电话 成绩n">。prin tf("%-10s%-8s%6s%14s%16s%16s%6d",stude nti.xuehao,stude nti. name,stude nti.sex, stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.score>。break。if(flag=0>printf("n无此学生信息n">。return。printf("n要修改学生的姓名：n&quo

21、t;>。prin tf("stude nti. name="> 。sca nf("%s",stude nti. name> 。printf("n要修改学生的性别：n">printf("studenti.sex=">。seanf("%s",studenti.sex> 。printf("n要修改学生的出生年月：n">。printf("studenti.birth="> 。sea nf("%s"

22、,stude nti.birth> 。printf("n要修改学生的籍贯：n">。prin tf("stude nti.jigua n="> 。sea nf("%s",stude nti.jigua n> 。printf("n要修改学生的电话：n">。printf("studenti.tel="> 。seanf("%s",studenti.tel> 。printf("n要修改学生的成绩：n">。printf(

23、"studenti.score="> 。sea nf("%d",&stude nti.score> 。for(i=0。 ivnum。 i+>prin tf("n%-10s%-8s%6s%14s%16s%16s%6d",stude nti.xuehao,stude nti. name,stude nti.sex, stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.seore>。void classify_male(>/ 按男分类in

24、t i。FILE *fp。fp=fopen ("male.txt","w"> 。if (fp=NULL>printf("不能找到文件，请检查！">。return。fputs(headline,fp>。for(i=0。 ivnum。 i+>if(stremp(studenti.sex,"男">=0>prin tf("n%-10s%-8s%6s%14s%16s%16s%6d",stude nti.xuehao,stude nti. name,stude nt

25、i.sex, stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.seore>。fprin tf(fp,"n%-10s%-8s%6s%14s%16s%16s%6d",stude nti.xuehao,stude nti. name,stude nti.sex, stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.score>。fclose(fp>。void classify_female(>/ 按女分类int i。FIL

26、E *fp1。fp仁 fope n( "female.txt","w"> 。if (fp1=NULL>printf("不能找到文件，请检查！">。return。fputs(headline,fp1>。for(i=0。 ivnum。 i+>if(strcmp(studenti.sex,"女">=0>prin tf("n%-10s%-8s%6s%14s%16s%16s%6d",stude nti.xuehao,stude nti. name,stude nt

27、i.sex, stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.score>。fprin tf(fp1,"n%-10s%-8s%6s%14s%16s%16s%6d",stude nti.xuehao,stude nti. name,stude nti.sex, stude nti.birth,stude nti.jigua n, stude nti.tel,stude nti.score>。fclose(fp1>。void classify(>/ 分类int b。prin tf("n*n">prin tf("n*n">oprintf("请选择：">。scanf("%d",&b>。switch(b>case 1:classify_male(> 。b