C++实验六；

#include
#includestring>
#includeusing namespace std;
int main()
{
    char a[20]="merge sucessfully";
    ofstream file("3.txt",ios_base::app);
    fileendl;
    file.write(reinterpret_castchar *>(&a),sizeof(a));
    file.close();
    return 0;    
}

#include 
#include string>
#include "utils.h"
#include 
#include
#include
#includeusing namespace std;

int main() {
    string filename;
    filename = getCurrentDate();
    cout  endl;
    char file[50];
    string a[100];
    int n,i,j,s=0;
    cout"输入名单列表文件名：";
    gets(file);
    cout"输入抽取人数:";
    cin>>n; 
    ifstream fin;
    fin.open(file);
    if(!fin.is_open()) 
    {
    cerr "fail to open file "  endl;
    system("pause");
    exit(0);
    }
    string newfile;
    ofstream fout;
    newfile=filename;
    fout.open(newfile);
    if(!fout.is_open())
    {
    cerr "fail to open file "  endl;
    system("pause");
    exit(0);    
    }
   ifstream infile(file);
   //读取文本行数// 
    while(!infile.eof()){
        getline(infile,a[s],‘\n‘);
         s++;
     }
    int ran;
    for(i=0;i)
    {
    srand(time(NULL));
    ran+=rand()%s;
    coutendl;
    }
    fin.close();
    fout.close();
    return 0;
}

#include
#includeusing namespace std;
int main()
{
    char filename[20];
    cout"输入要统计的英文文本文件名:";
    gets(filename);
    int cnum=0,wnum=0,lnum=0;
    ifstream fin;
    fin.open(filename);
    if(!fin.is_open()) {
        cerr "fail to open file "  endl;
        system("pause");
        exit(0);
    }
    char ch;
    while(fin.get(ch))
    {
        if(ch==‘ ‘)
        { 
        wnum++;
        cnum++;
    }
        else if(ch!=‘ ‘&&ch!=‘\n‘)
        cnum++;
        else
        {
        lnum++;    
    }
    }
    cout"字符数"endl;
    cout"单词数"1endl;
    cout"行数"1endl; 
    fin.close() ;
}