#include <iostream>
#include <string>
#include <sstream>
 
int countWords(const std::string& line)
{
    std::istringstream str(line);
    std::string dump;
    int count = 0;
    while(str >> dump)
        ++count;
    return count;
}
 
int main()
{
	std::cout << "Enter line\n";
    std::string line;
    std::getline(std::cin, line);
    std::cout << "Sentence: " << line << '\n' <<
                 "Word count: " << countWords(line) << '\n';
}
 

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a    quick brown  fox jumps over the lazy    dog