listall.c

设计一个学生成绩管理系统

#include"jinhe.h"
void list_all()
{ int x,i=0,flag=0;
  FILE *fp;
  extern char filename[15];
  struct student stu[M];
  if((fp=fopen(filename,"rb"))==NULL)
  { clrscr();
    gotoxy(15,15);
    printf("Cannot open file.Please press any key return.");
    getch();
    clrscr();
    return;
  }
  for(;;)
  { if(flag==1) break;
    clrscr();
    x=0;
    gotoxy(5,2);
    printf("****************Computer technology and science 2 ban****************");
    gotoxy(29,3);
    printf("--press enter to change the page and return--");
    gotoxy(5,4);
    printf("|-------------------------------------------------------------------|");
    gotoxy(5,5);
    printf("|--NUMBER--|-----NAME------|-SEX-|-ENGLI-|-COMPE-|-MATH-|-CPR-|-AVE-|");
    gotoxy(5,6);
    printf("|----------|---------------|-----|-------|-------|------|-----|-----|");
    for(;;i++)
	{ fread(&stu[i],LEN,1,fp);
	  if(stu[i].no==0) { flag=1; break;}
	  gotoxy(5,7+x);printf("|");
	  gotoxy(16,7+x);printf("|");
	  gotoxy(32,7+x);printf("|");
	  gotoxy(38,7+x);printf("|");
	  gotoxy(46,7+x);printf("|");
	  gotoxy(54,7+x);printf("|");
	  gotoxy(61,7+x);printf("|");
	  gotoxy(67,7+x);printf("|");
	  gotoxy(73,7+x);printf("|");
	  gotoxy(6,7+x);printf("%ld",stu[i].no);
	  gotoxy(17,7+x);printf("%s",stu[i].name);
	  gotoxy(33,7+x);printf("%s",stu[i].sex);
	  gotoxy(39,7+x);printf("%.1f",stu[i].english);
	  gotoxy(47,7+x);printf("%.1f",stu[i].computer);
	  gotoxy(55,7+x);printf("%.1f",stu[i].maths);
	  gotoxy(62,7+x);printf("%.1f",stu[i].c_programe);
	  gotoxy(68,7+x);printf("%.1lf",stu[i].average);
	  gotoxy(5,8+x);printf("|----------|---------------|-----|-------|-------|------|-----|-----|");
	  x+=2;
	  if((i+1)%9==0)
	  { i++;
	    getch();
	    break;
	  }
	}
    if(i%9==0)
    { clrscr();
      gotoxy(5,15);
      printf("This is the end! Press any key to Quit!");
    }
  }
  fclose(fp);
  getch();
}