Having a string within a system()

Question

How can I use a string within a system(). ex: (input is the string)

system(\"open -a Google Chrome\" \"http://www.dictionary.reference.com/browse/\" + input + \"         


        

Answer 1

system is available in cstdlib header.

Function takes a c-style string as a parameter. + doesn't append string literals.

So try -

std::string cmd("open -a Google Chrome");
cmd += " http://www.dictionary.reference.com/browse/" + input + "?s=t";

// In the above case, operator + overloaded in `std::string` is called and 
// does the necessary concatenation.

system(cmd.c_str());