词频统计

语言：C++

工具：Dev C++

  本次作业与上次比较不同之处在于找一个特定的单词，对上次作业稍作改动，很多代码都询问了合作对象曹权同学

#include <iostream>
#include<cstring>
#include<fstream>
using namespace std;
struct Sto{ // 存储查询单词信息
int num;
char s[25];
};

int Delimit(char de) //分隔符 判断
{
bool j1=(de==' ');
bool j2=(de==',');
bool j3=(de=='.');
bool j4=(de=='!');
bool j5=(de=='?');
bool j6=(de=='"');
bool j7=(de==';');
bool j8=(de==':');
if(j1||j2||j3||j4||j5||j6||j7||j8)
return 0;
else return 1;
}
int main() {
char filename[70];
cout<<"输入文件路径（该文件中第一个字符须为空格）：";
cin>>filename;
ifstream infile(filename);
if (!infile){
cout << "~路径错误~ ";
exit(1);
}
else{
Sto test;
test.num = 0;
cout << "输入查询单词：";
cin >> test.s;
int len = strlen(test.s);
char *sen;
sen = new char[len+1];
while (infile){
infile >> noskipws>>sen[0];
if (sen[0] == ' ')
{
for (int i = 1; i <= len+1; i++) //单词判定
{
infile >> sen[i];
if(sen[i]>='A'&&sen[i]<='Z')
sen[i]=sen[i]+32;
if (i == len+1)
{
if (!Delimit(sen[i]))
test.num++;
}
if (sen[i] != test.s[i-1])break;
}
}
}
cout << test.s << ": " << test.num << endl;
delete []sen;
}
infile.close();
}