第1个回答 2009-05-01
#include <iostream>
#include <string>
#define BUFLEN 1024
using namespace std;
bool isWord(char );
int main()
{
char line[BUFLEN];
string str;
int word = 0, begin = 0;
cin.getline(line, BUFLEN);
str = line;
for (int i = 0; i < str.length(); ++i)
{
if (str[i] == ' ')
{
if (isWord(str[begin]))
++word;
begin = i + 1;
}
}
while (str[begin] == ' ')
++begin;
if (isWord(str[begin]))
++word;
cout << "句子中包含的单词个数:" << word << endl;
return 0;
}
bool isWord(char ch)
{
return ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z'));
}