學(xué)生基本信息管理系統(tǒng)(LINUX下)

1、 . . . 學(xué)習(xí)并分別使用標(biāo)準(zhǔn)C的文件操作函數(shù)和Linux的系統(tǒng)調(diào)用創(chuàng)建一個對學(xué)生基本信息進(jìn)行操作（插入、修改和刪除）的C程序，學(xué)生基本信息以結(jié)構(gòu)體的形式存儲在文件 #include#include#include#include#includestruct stu_info char stu_num12; char name10; char sex;/*0為女生，1為男生*/ char mobile_phone12;struct stu_info student;unsigned int number;struct stu_info stu100;FILE *in;FILE *out;in

2、t len;void inputstu();void updatestu();void deletestu();void displaystu();void commanddisp() printf(-n); printf(|-學(xué)生基本信息管理-|n); printf(|-1.基本信息插入.-2.基本信息修改-|n); printf(|-3.基本信息刪除.-4.基本信息顯示-|n); printf(|-r.初始化（第一次使用時用！慎用）-q.退出-|n); printf(|-請輸入你的選擇：-|n); printf(-n);void main() commanddisp(); char ch;

3、 while(1) do ch=getchar(); while(ch=n); if(ch=q)return; switch(ch) case 1: inputstu(); break; case 2: updatestu(); break; case 3: deletestu(); break; case 4: displaystu(); break; case r: printf(ninit student tablen); if(out=fopen(c.doc,w)=NULL) return; number=0; fwrite(&number,sizeof(unsigned int),1

4、,out); fflush(out); fclose(out); break; default: break; printf(please enter any key to continue); getchar(); getchar(); system(clear); commanddisp(); void inputstu() printf(n-請輸入學(xué)生信息-n); char p=y; while(p=y|p=Y) memset(&student,0,sizeof(student); printf(學(xué)號:); scanf(%s,student.stu_num); printf(:); sc

5、anf(%s,); printf(性別0是女，1是男:); do student.sex=getchar(); while(student.sex=n); printf(手機(jī)號:); scanf(%s,student.mobile_phone); len=sizeof(struct stu_info); if(out=fopen(c.doc,r+)=NULL) return; fread(&number,sizeof(unsigned int),1,out); number+; fseek(out,0L,SEEK_SET); fwrite(&number,sizeof(

6、unsigned int),1,out); fflush(out); fseek(out,0L,SEEK_END); fwrite(&student,len,1,out); fflush(out); fclose(out); printf(是否繼續(xù)輸入YNn); fflush(stdin); do p=getchar(); while(p=n); void updatestu() printf(n-學(xué)生信息修改-n); printf(請輸入修改學(xué)生的學(xué)號：); memset(&student,0,sizeof(student); scanf(%s,student.stu_num); print

7、f(:); scanf(%s,); printf(性別0是女，1是男:); do student.sex=getchar(); while(student.sex=n); printf(手機(jī)號:); scanf(%s,student.mobile_phone); len=sizeof(struct stu_info); in=fopen(c.doc,r+); fread(&number,sizeof(unsigned int),1,in); unsigned int j; long kk; for(j=0;jnumber;j+) fread(&stu0,len,1,in

8、); if(strcmp(student.stu_num,stu0.stu_num)=0) kk=len; fseek(in,-kk,SEEK_CUR); fwrite(&student,len,1,in); break; fflush(in); fclose(in); if(j=number)printf(沒有這條記錄n);void deletestu() printf(n-學(xué)生信息刪除-n); in=fopen(c.doc,r); fread(&number,sizeof(unsigned int),1,in); memset(stu,0,sizeof(stu); len=sizeof(s

9、truct stu_info); fread(stu,len,number,in); unsigned int i; char f; while(1) printf(請輸入刪除學(xué)生的學(xué)號：); char stu_num12; memset(stu_num,0,sizeof(stu_num); fflush(stdin); scanf(%s,stu_num); for(i=0;inumber;i+) if(strcmp(stu_num,stui.stu_num)=0)break; if(i=number) printf(沒有這條記錄n); else number-; for(;inumber;i

10、+) strcpy(stui.stu_num,stui+1.stu_num); strcpy(,stui+1.name); stui.sex=stui+1.sex; strcpy(stui.mobile_phone,stui+1.mobile_phone); printf(是否繼續(xù)刪除YNn); fflush(stdin); do f=getchar(); while(f=n); if(f!=y&f!=Y)break; fclose(in); out = fopen(c.doc,w); fwrite(&number,sizeof(unsigned int),1,out); len=len*number; fwrite(stu,len,1,out); fflush(out); fclose(out);void displaystu() printf(n-顯示學(xué)生信息-n); in=fopen(c.doc,r); fread(&number,sizeof(unsigned int),1,in); memset(stu,0,sizeof(stu); len=sizeof(struct stu_info); fread(stu,len,number,in); unsigned int i; printf