C++如何按单词输入和统计我输入了多少单词

#include <iostream>
#include <sstream>
#include <string>

int countWords(const std::string& input) {
    std::stringstream ss(input);
    std::string word;
    int count = 0;

    while (ss >> word) {
        count++;
    }

    return count;
}

int main() {
    std::string input;
    std::cout << "请输入一段文本：";
    std::getline(std::cin, input);

    int wordCount = countWords(input);
    std::cout << "输入的单词数量为：" << wordCount << std::endl;

    return 0;
}