Thread: Problem with a string

I want to make a program in which when a person type "black" on run time, the output will be one. Can I use switch or any loop for it, if so how? if not what I do?

Code:

std::string someString;

while(someString != "black"){
    while(!(std::cin >> someString)) /*Deal with error*/;
    std::cout << "1";
}

Originally Posted by ex-mortis

Code:

std::string someString;

while(someString != "black"){
    while(!(std::cin >> someString)) /*Deal with error*/;
    std::cout << "1";
}

Maybe you should see iMalc's post again.He said that we do not compare strings by operator == but with the function strcmp.Same story for operator != . strcmp will return zero if the strings are equal and a non-zero value if the strings are not equal

Originally Posted by grumpy

iMalc didn't say that. He said that strings cannot be tested using switch statements, and that one should use (since this is a C++ forum, not C) == operators.

Your comment about using strcmp() is unnecessary (and often invalid) for C++ code that uses C++'s string type. ex-mortis's example is correct because it used that string type, again bearing in mind that this is a C++ forum.

What you say is valid in C. But C++ provides alternatives that C does not.

Oh,i am truly sorry.Of course you are right.Thanks for correcting me.!!!