5.18

 1 #include <iostream>
 2 #include <fstream>
 3 #include <string>
 4 
 5 int main() {
 6     std::ifstream inputFile("D://article.txt"); 
 7 
 8     if (!inputFile) {
 9         std::cout << "无法打开输入文件！" << std::endl;
10         return 1;
11     }
12 
13     int wordCount = 0;
14     int lineCount = 0;
15     std::string line;
16 
17     while (std::getline(inputFile, line)) {
18         lineCount++; 
19 
20         
21         size_t pos = 0;
22         while ((pos = line.find_first_not_of(" \t", pos)) != std::string::npos) {
23             pos = line.find_first_of(" \t", pos + 1);
24             wordCount++;
25         }
26     }
27 
28     inputFile.close(); 
29 
30     std::cout << "文章中单词个数：" << wordCount << std::endl;
31     std::cout << "文章中行数：" << lineCount << std::endl;
32 
33     return 0;
34 }