void run() {

// infix 10 + 3 * 5 / 3

// posfix 10 3 5 * 3/+

vector<string> tokensPostfix;

tokensPostfix.push_back("10");

tokensPostfix.push_back("3");

tokensPostfix.push_back("5");

tokensPostfix.push_back("*");

tokensPostfix.push_back("3");

tokensPostfix.push_back("/");

tokensPostfix.push_back("+");

string strTokens;

for (std::vector<std::string>::iterator c = tokensPostfix.begin(); c != tokensPostfix.end(); c++ /* C++ :-) C++ :-/ */)

{

strTokens += *c;

strTokens += " ";

}

cout << strTokens << endl;

for (std::vector<std::string>::iterator c = tokensPostfix.begin(); c != tokensPostfix.end(); c++ /* C++ :-) C++ :-/ */) {

std::cout << *c << std::endl;

if (*c == " ")

continue;

else if (*c == "+")

add();

else if (*c == "-")

sub();

else if (*c == "*")

mul();

else if (*c == "/")

div();

else if (*c != "(" && *c != ")")

push(stoi(*c));

printStackItens();

}

print();

}

{

Example example;

example.run();

}