Определить количество слов, в которых встречается буква, вводимая с клавиатуры

#include <algorithm>
#include <iostream>
#include <string>
int main()
{
    std::string text="bla bla bla";
    std::cout<<text;
    std::cout<<"\nEnter char:";
    char c;std::cin>>c;
    int n=std::count(text.begin(),text.end(),c);
    std::cout<<'\n'<<c<<" found "<<n<<" times\n";
    system("pause");
    return 0;
}

#include <iostream>
#include<vector>
#include<algorithm>
#include<cstdlib>
#include<string>
#include<sstream>
 
int main()
{
    std::string text = "dkjfsa sdf sadkf a;df fff",word;
    std::stringstream ss(text);
    std::vector <std::string> svec;
    char symbol = 'a';
    for(std::string word; ss>>word; svec.push_back(word));
    size_t count(0);
    for(auto x:svec)
    if(std::find(std::begin(x),std::end(x),symbol) != std::end(x))
        count++;
    std::cout<<count;
    system("pause");
}

#include <iostream>
#include <sstream>
#include <string>
 
int main()
{
    const std::string str = "Eniki beniki eli vareniki";
    std::cout << "Text: " << str << "\nEnter your character: ";
    char c;
    std::cin >> c;
    std::istringstream ist(str);
    int counter = 0;
    std::string word;
    while (ist >> word)
        if (word.find(c) != std::string::npos)
            counter++;
    std::cout << "Words with your character: " << counter;
}