ssc.rar_visual c

#include<stdio.h> typedef struct { char name[8]; char id[2]; int chinese; int math; int english; int sum; }*Student; void Unitedfile()//合并1.txt和2.txt为3.txt { FILE *fp,*p; Student studd; fp=fopen("1.txt","r"); /*以读的方式打开1.txt*/ p=fopen("3.txt","w"); /*以写的方式打开3.txt*/ int i=0; while( fscanf(fp,"%s%s%d%d%d",studd[i].name,&studd[i].id,studd[i].chinese,&studd[i].math,&studd[i].english )!=EOF) { fprintf(p,"%-6s %-6s %-6d %-6d %-6d\n",studd[i].name,studd[i].id,studd[i].chinese,studd[i].math,studd[i].english ); printf("%-6s %-6s %-6d %-6d %-6d\n",studd[i].name,studd[i].id,studd[i].chinese,studd[i].math,studd[i].english ); i++; } /*读取1.txt的数据写入3.txt，继续读取直结束*/ fclose(fp); /*关闭文件1.txt*/ fp=fopen("2.txt","r"); /*以写的方式打开2.txt*/ i=0; while( fscanf(fp,"%s%s%d%d%d",studd[i].name,studd[i].id,&studd[i].chinese,&studd[i].math,&studd[i].english )!=EOF) { fprintf(p,"%-6s %-6s %-6d %-6d %-6d\n",studd[i].name,studd[i].id,studd[i].chinese,studd[i].math,studd[i].english ); printf("%-6s %-6s %-6d %-6d %-6d\n",studd[i].name,studd[i].id,studd[i].chinese,studd[i].math,studd[i].english ); /*输出文本3.txt中的信息*/ i++; } fclose(fp); /*关闭文件2.txt*/ fclose(p); /*关闭文件3.txt*/ } void findout() /*提取有补考学生的信息写入4.txt中*/ { FILE *fp,*p; Student studd; fp=fopen("3.txt","r"); p=fopen("4.txt","w"); int i=0; while( fscanf(fp,"%s%s%d%d%d",studd[i].name,studd[i].id,&studd[i].chinese,&studd[i].math,&studd[i].english )!=EOF) { if(studd[i].chinese<60||studd[i].math<60||studd[i].english<60) { fprintf(p,"%-6s %-6s %-6d %-6d %-6d\n",studd[i].name,studd[i].id,studd[i].chinese,studd[i].math,studd[i].english ); printf("%-6s %-6s %-6d %-6d %-6d\n",studd[i].name,studd[i].id,studd[i].chinese,studd[i].math,studd[i].english ); /*输出文本4.txt中的信息*/ } i++; } fclose(fp); fclose(p); } void Bsort(int R[],int n) { int t, flag=1,j; /*当flag为0时则停止排序*/ for( j=1;j<n;j++) { flag=0; for(int k=n-1;k>=j;k--) if(R[k]>R[k-1]) { t=R[k]; R[k]=R[k-1]; R[k-1]=t;flag=1; } if(flag==0) return; } } void maopao(Student studd) { int i,n; FILE *fp; fp=fopen("3.txt","r"); i=0; while(fscanf(fp,"%s%s%d%d%d",studd[i].name,studd[i].id,&studd[i].chinese,&studd[i].math,&studd[i].english )!=EOF) { studd[i].sum=studd[i].english+studd[i].chinese+studd[i].math; i++; } fclose(fp); n=i-1; Bsort(studd.sum,n); /*冒泡排序*/ fp=fopen("3.txt","w"); /*将信息写入3.txt中*/ for(int m=0;m<i;m++) { fprintf(fp,"%-8s %-8s %-8d %-8d %-8d %-8d\n",studd[m].name,studd[m].id,studd[m].chinese,studd[m].math,studd[m].english,studd[m].sum ); } fclose(fp); }; int Partition(int low,int high) { int pivotkey; Student temp; temp=studd[low]; pivotkey=studd[low].sum; while(low<high) { while(low<high&&stud[high].sum<=pivotkey)--high; stud[low]=studd[high]; while(low<high&&studd[low].sum>=pivotkey)++low; studd[high]=studd[low]; } studdivotloc; if(low<high) { privotloc=Partition(low,high); QSort(low,privotloc-1); QSort(privotloc+1,high); } } void kuaisu() /*读取文件排序后将结果写入3.txt*/ { int i,low,high; FILE *fp; fp=fopen("3.txt","r"); i=0; while(fscanf(fp,"%s%s%d%d%d",stud[i].name,stud[i].id,&stud[i].chinese,&stud[i].math,&stud[i].english )!=EOF) { stud[i].sum=stud[i].english+stud[i].chinese+stud[i].math; i++; } fclose(fp); low=0; high=i-1; QSort(low,high); /*快速排序*/ fp=fopen("3.txt","w"); /*将排序后的数据写入3.txt中*/ for(int j=0;j<i;j++) { fprintf(fp,"%-8s %-8s %-8d %-8d %-8d %-8d\n",stud[j].name,stud[j].id,stud[j].chinese,stud[j].math,stud[j].english,stud[j].sum ); } fclose(fp); } int main() { int choice; while(1) { /*主菜单*/ if(sign3==0) { printf("*******************************************************************************\n"); printf("***************************** 学生成绩管理系统 ******************************\n"); printf("********************* 1. 合并1和2得3 *****************\n"); printf("********************* 2. 把3中有成绩不及格的放入新文件4中 *****************\n"); printf("********************* 3. 把3中成绩总分按降序排列 *****************\n"); printf("********************* 4. 输入姓名,查找该成绩信息并输出结果 *****************\n"); printf("********************* 5. 退出系统 *****************\n"); printf("*******************************************************************************\n"); printf("请输入(1-5)选择要使用的功能:"); } sign3=1; scanf("%d",&choice); switch(choice) { case 1: Unitedfile(); sign=1; cout<<"1和2合并成功!"<<endl; cout<<"请选择下一步操作:"<<endl; break; case 2: if(sign==0) { cout<<"请执行操作1后再执行此项操作!"<<endl; cout<<"请选择下一步操作:"<<endl; break; } cout<<"4.txt生成成功!"<<endl;; findout(); cout<<"请选择下一步操作:"<<endl; break; case 3: if(sign==0) { cout<<"请执行操作1后再执行此项操作!"<<endl; cout<<"请选择下一步操作:"<<endl; break; } sortfile(); cout<<"降序排列成功!"<<endl; cout<<"请选择下一步操作:"<<endl; sign1=1; break; case 4: while(1) { char c; findoutstudent(); cout<<"继续查找或返回主菜单请输入Y/N:"<<endl; cin>>c; if(c=='N'||c=='n')break; } system("cls"); sign3=0; break; case 5: exit(0); break; } } return 0; }