／＊第三方函数库: SGCHN3.0＊／ ／＊该库函数的的一些函数说明 /*  C Head File.     SGCHN30.h     Definitions for SGCHN3.0 Run time Library Function.     Copyright (c) 2004, 2005 SGPRO     All Rights Reserved.     Autor: YinShengge 作者: 殷圣鸽     Version: 3.0     Build Time: 2004 - 4     Maintain Time: 2005-5-14     Maintain Time: 2005-5-19   */ extern void  SGCHNinit(); extern char  *getsgchnversion();   /*获得SGCHN版本*/   extern int   scanformat(char *formats, ...);    /*控制台格式输入  与scanf类似*/ extern int   print(char *formats,...);          /*控制台格式输出  与printf类似*/ extern int   *getsforcon(char *string);         /*从控制台读入一行字符串,存入string*/ extern char  getcharforcon();                 /*从控制台读入一个字符.回显*/ extern int   putsforcon(char *string);             /*控制台输出一行字符*/ extern int   saveconsole(const char *filename); extern int   sgchnquikstart();  /*SGCHN系统快速启动.*/ #endif 再说明一下 ,函数: saveconsole(const char *filename) 可以将控制台的内容保存到 文件: filename中 changeconsolesize(int size); ＊／ 程序： #include<stdio.h> #include<stdlib.h> #include<ctype.h> #include<dos.h> #define swap(x,y,t) ((t)=(x),(x)=(y),(y)=(t)) #define N 30 #define C 15 #define ok 1 #define error 0 typedef int status; typedef struct stud { long num; char name[C]; int  high_math; int english; int physics; int program; int database; int total; int ave; }student; student chengji[N]; int number,ave[N]; status assert(int x) { if(x>=0&&x<=100) return ok; else return error; } status create_chengjilist() { int num,i; print("\n正在创建学生成绩表,请稍等.........\n"); sleep(6); print("请输入学生的数目(<30):"); scanformat("%d",&num); while(num>N) { print("\n你输入的人数太多!"); print("\n请重新输入:"); scanformat("%d",&num); } for(i=0;i<num;i++) { print("\n输入第%d个学生的成绩信息:\n",i+1); print("学号:"); scanformat("%ld",&chengji[i].num); print("\n姓名:"); scanformat("%s",chengji[i].name); print("\n高等数学:"); scanformat("%d",&chengji[i].high_math); while(!assert(chengji[i].high_math)) { print("\n输入非法格式."); print("\n请重新输入."); scanformat("%d",&chengji[i].high_math); } print("\n英语:"); scanformat("%d",&chengji[i].english); while(!assert(chengji[i].english)) { print("\n输入非法格式."); print("\n请重新输入."); scanformat("%d",&chengji[i].english); } print("\n物理:"); scanformat("%d",&chengji[i].physics); while(!assert(chengji[i].physics)) { print("\n输入非法格式."); print("\n请重新输入."); scanformat("%d",&chengji[i].physics); } print("\n程序设计:"); scanformat("%d",&chengji[i].program); while(!assert(chengji[i].program)) { print("\n输入非法格式."); print("\n请重新输入."); scanformat("%d",&chengji[i].program); } print("\n数据库:"); scanformat("%d",&chengji[i].database); while(!assert(chengji[i].database)) { print("\n输入非法格式."); print("\n请重新输入."); scanformat("%d",&chengji[i].database); } chengji[i].total=chengji[i].high_math+chengji[i].english+chengji[i].physics+chengji[i].program+chengji[i].database; chengji[i].ave=chengji[i].total/5; } print("\n学生成绩表创建成功!!!\n"); return num; } void show(int data) { int i; print("\n学生成绩表的所有信息:\n"); for(i=0;i<data;i++) { if(!(chengji[i].name[0]=='')) { print("\n第%d个学生信息:",i+1); print("\n学号:"); print("%ld",chengji[i].num); print("\n姓名:"); print("%s",chengji[i].name); print("\n高等数学:"); print("%d",chengji[i].high_math); print("\n英语:"); print("%d",chengji[i].english); print("\n物理:"); print("%d",chengji[i].physics); print("\n程序设计:"); print("%d",chengji[i].program); print("\n数据库:"); print("%d",chengji[i].database); print("\n总分:"); print("%d",chengji[i].total); print("\n平均分:"); print("%d",chengji[i].ave); } } } status search_num(int v,long d) { int i; for(i=0;i<v;i++)   { if(chengji[i].num==d)    break;    } if(i==v) { print("\n成绩表中不存在该生."); return; } else { print("\n查找学生的信息是:\n"); print("\n学号:"); print("%ld",chengji[i].num); print("\n姓名:"); print("%s",chengji[i].name); print("\n高等数学:"); print("%d",chengji[i].high_math); print("\n英语:"); print("%d",chengji[i].english); print("\n物理:"); print("%d",chengji[i].physics); print("\n程序设计:"); print("%d",chengji[i].program); print("\n数据库:"); print("%d",chengji[i].database); print("\n总分:"); print("%d",chengji[i].total); print("\n平均分:"); print("%d",chengji[i].ave); return i; } } void search_name(int s) { int i; char string[C]; print("\n请输入要查找学生的姓名:"); scanformat("%s",string); for(i=0;i<s;i++) { if(!strcmp(string,chengji[i].name)) break; } if(i==s) { print("\n成绩表中不存在该生."); return; } else { print("\n该生的成绩记录:\n"); print("\n学号:"); print("%ld",chengji[i].num); print("\n姓名:"); print("%s",chengji[i].name); print("\n高等数学:"); print("%d",chengji[i].high_math); print("\n英语:"); print("%d",chengji[i].english); print("\n物理:"); print("%d",chengji[i].physics); print("\n程序设计:"); print("%d",chengji[i].program); print("\n数据库:"); print("%d",chengji[i].database); print("\n总分:"); print("%d",chengji[i].total); print("\n平均分:"); print("%d",chengji[i].ave); } } void searchlist(int t) { int i; long num; char ch; while(1) { print("\n1.学号.\n2.姓名"); print("\n你想通过什么查询.请选择:"); scanformat("%d",&i); switch(i) { case 1: print("\n请输入要查找学生的学号:"); scanformat("%ld",&num); search_num(t,num); break; case 2: search_name(t); break; default: print("\n非法输入."); break; } print("\n想继续查询吗?Y or N?:"); scanformat("%ch",&ch); if(ch=='N'||ch=='n') break; } } void show_menu() { print("=================================="); print("\n1.显示成绩表中所有的学生成绩信息."); print("\n2.查询学生的成绩信息."); print("\n3.加入学生的成绩信息."); print("\n4.删除学生的成绩信息."); print("\n5.显示各科目的平均分."); print("\n6.显示学生成绩排名情况."); print("\n7.退出学生成绩管理系统."); print("\n================================"); print("\n请选择你想要的操作:"); } status insertlist(int m) { char ch; print("\n请输入加入学生的成绩信息:\n"); while(1) { print("\n输入第%d个学生的成绩信息:\n",m+1); print("学号:"); scanformat("%ld",&chengji[m].num); print("\n姓名:"); scanformat("%s",chengji[m].name); print("\n高等数学:"); scanformat("%d",&chengji[m].high_math); while(!assert(chengji[m].high_math)) { print("\n输入非法格式."); print("\n请重新输入."); scanformat("%d",&chengji[m].high_math); } print("\n英语:"); scanformat("%d",&chengji[m].english); while(!assert(chengji[m].english)) { print("\n输入非法格式."); print("\n请重新输入."); scanformat("%d",&chengji[m].english); } print("\n物理:"); scanformat("%d",&chengji[m].physics); while(!assert(chengji[m].physics)) { print("\n输入非法格式."); print("\n请重新输入."); scanformat("%d",&chengji[m].physics); } print("\n程序设计:"); scanformat("%d",&chengji[m].program); while(!assert(chengji[m].program)) { print("\n输入非法格式."); print("\n请重新输入."); scanformat("%d",&chengji[m].program); } print("\n数据库:"); scanformat("%d",&chengji[m].database); while(!assert(chengji[m].database)) { print("\n输入非法格式."); print("\n请重新输入."); scanformat("%d",&chengji[m].database); } chengji[m].total=chengji[m].high_math+chengji[m].english+chengji[m].physics+chengji[m].program+chengji[m].database; chengji[m].ave=chengji[m].total/5; print("\n成功的加入一个学生的成绩信息."); m=m+1; print("\n想继续吗?Y or n?:"); scanf("%c",&ch); if(ch=='N'||ch=='n') return m; } } void deletelist(int n) { char ch,string[C]; int i; long xuehao; string[0]='\0'; print("\n请输入你想删去的学生的学号:"); scanf("%ld",&xuehao); print("\n你要删去的学生的信息:\n"); i=search_num(n,xuehao); print("\n你真的要删去该生的成绩信息吗?Y or N ?:"); scanformat("%c",&ch); if(ch=='Y'||ch=='y') { strcpy(chengji[i].name,string); print("\n你已经成功的删去了该生的成绩信息!!\n"); return; } else return; } void show_average() { int sum1=0,sum2=0,sum3=0,sum4=0,sum5=0,i; print("\n正在计算各科目的平均分,请稍等........."); sleep(5); for(i=0;i<number;i++) if(!(chengji[i].name[0]==' ')) { sum1+=chengji[i].high_math; sum2+=chengji[i].english; sum3+=chengji[i].physics; sum4+=chengji[i].program; sum5+=chengji[i].database; } print("\n高等数学:%d",sum1/number); print("\n英语:%d",sum2/number); print("\n物理:%d",sum3/number); print("\n程序设计:%d",sum4/number); print("\n数据库:%d",sum5/number); } status search_ave(int average) { int i; for(i=0;i<number;i++) { if(chengji[i].name[0]==' ') continue; if(ave[i]==average) { ave[i]=0; return i; } } return -1; } void search_paiming() { int numb[N],i,j,temp,k,m=0;/*??????*/ for(i=0;i<number;i++) numb[i]=chengji[i].ave; for(i=number;i>=0;i--) { for(j=i-1;j>=0;j--) if(numb[j]<numb[i]) { swap(numb[j],numb[i],temp); i=j; } } print("\n学生成绩排名:\n"); print("名次             学号              姓名           平均分"); for(i=0;i<number;i++) { k=search_ave(numb[i]); if(k>=0&&chengji[k].name[0]!=' ') { print("\n第%d名:",m+1); print("          %ld",chengji[k].num); print("          %s",chengji[k].name); print("          %d",chengji[k].ave); m++; } } print("\n"); } main() { int choice,i; number=create_chengjilist(); while(1) { print("\n"); show_menu(); scanformat("%d",&choice); switch(choice) { case 1: show(number); break; case 2: searchlist(number); break; case 3: number=insertlist(number); break; case 4: deletelist(number); break; case 5: show_average(); break; case 6: for(i=0;i<number;i++) ave[i]=chengji[i].ave; search_paiming(); break; case 7: saveconsole("student.txt"); return; default: print("\n非法输入!"); break; } } }

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