sewisco.c

设计一个学生成绩管理系统

#include"jinhe.h"
void search_with_score()
{ FILE *fp;
  int x,i=0,n=0,flag=0;
  float score;
  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();
    return;
  }
  clrscr();
  gotoxy(15,15);
  printf("Please input the max score you want to search:");
  scanf("%f",&score);
  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(;;)
    { fread(&stu[i],LEN,1,fp);
      if(stu[i].no==0) { flag=1; break;}
      if(stu[i].average<=score)
      { 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;
	i++;
	if(++n%9==0)
	{ getch();
	  break;
	}
      }
    }
    if(i%9==0)
    { clrscr();
      gotoxy(5,15);
      printf("This is the end! Press any key to Quit!");
    }
  }
  fclose(fp);
  getch();
}