初学者求教，判断文件单词数的问题 - 编程论坛

#2

sunkaidong2008-04-02 22:34

#include <string>
#include <map>
#include <iostream>
using namespace std;
int main()
{
    char str[500];
    char *strToken;
    char strDelimit[] = " ,.?!";
    int wordCount = 0;
    map<string, int> words;
    map<string, int>::iterator iter;
    cout << "Please input a passage:" << endl;
    cin.getline( str, sizeof(str) );

    strToken = strtok( str, strDelimit );
    while ( strToken != NULL )
    {
        iter = words.find(strToken );
        if ( iter == words.end() )
        {
                words.insert( pair<string, int>(strToken, 1 ) );
        }
        else
        {
        iter->second++;
        }
    ++wordCount;
    strToken = strtok( NULL, strDelimit );
    }

for ( iter=words.begin(); iter!=words.end(); ++iter )
{
      cout << "Words begin with " << iter->first << ": " << iter->second << endl;
}
cout << "Total words: " << wordCount << endl;
}

#3

xjywc2008-04-04 14:20

这是我原来写的判断字符串个数的程序，可能不是很符合，但是你自己看着修改一下就可以了

#include <iostream>
#include <vector>
#include <string>
using namespace std;
struct Pair
{
    string name;
    int count;
};
vector<Pair>pairs;
int& new_pairs(const string& s)
{
    for (int i=0;i<pairs.size();i++ )
    {
        if (s==pairs[i].name)
        {
            return pairs[i].count;
        }
    }
    Pair p={s,0};
    pairs.push_back(p);
    return pairs[pairs.size()-1].count;
}
int main()
{
    string s;
    while(cin>>s)
    {   if (s=="quit")
          break;
        new_pairs(s)++;
    }
    for (vector<Pair>::const_iterator p=pairs.begin() ; p!=pairs.end() ; ++p)
    {
        cout<<p->name<<":"<<p->count<<"\n";
    }
    system("pause");
}

dev-c++下编译通过

#4

sunkaidong2008-04-04 18:06

我的已经可以统计了..而且可以统计相同的单词个数..