／＊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 0typedef 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;elsereturn 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;}elsereturn;}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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