How to I put a getline command in console app, and make sure its just getline, no other key

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hello, so i was in visual studio for testing... and turns out i was trying to find away to put only command line/getline in and no other key, basically saying the getline and no other key as command line,

What I have tried:

here is my code

    string str;
    while (1) {
        std::getline(std::cin, str);
        if (str == "") {
            std::cout << "wrong input, try again" << std::endl;
            break;
        }
    }
    return 0;
}

Posted 4-Dec-22 21:22pm

DF.EX

Updated 4-Dec-22 22:05pm

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CPallini 5-Dec-22 3:32am

Sorry?
Could you please elaborate?

DF.EX 5-Dec-22 3:41am

im saying, im trying to make a console app in visual studios, and there is a code in c++ console called getline where u can type a line in console app, ther eanother code called cout where u can put a line in the console not typing, and while using {} in getline u can add a code with the getline typing code, im looking for a solution where i can type the getline code command that the console app tells me to type, not any other random key, make sense?

DF.EX 5-Dec-22 3:55am

also the string called str is for me to type any input, if i type a input in console app i would get an error saying "wrong input, try again!"

Richard MacCutchan 5-Dec-22 4:00am

What actually happens when you run the code? As far as I can see, nothing useful if the entered string is not empty.

DF.EX 5-Dec-22 4:02am

what happens is u type a key in and ur suppost to get the word "wrong input, try again" not the getline code where u type in the code for acommand ur something

Richard MacCutchan 5-Dec-22 4:41am

Well that will not work, since getline is waiting for the complete line to be typed in, followed by the Enter key.

DF.EX 5-Dec-22 4:03am

but its usually empty..

Richard MacCutchan 5-Dec-22 4:42am

If you want to reply to people's comments/questions, then please use the Reply button above the message that you are replying to.

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OriginalGriff · Accepted Answer · 2022-12-04T22:05:00

Quote:
im saying, im trying to make a console app in visual studios, and there is a code in c++ console called getline where u can type a line in console app, ther eanother code called cout where u can put a line in the console not typing, and while using {} in getline u can add a code with the getline typing code, im looking for a solution where i can type the getline code command that the console app tells me to type, not any other random key, make sense?

Not really, but it seems that you want to prompt the user for an input, then call getline and restrict what he can enter so it it valid data for your application.

If so, there is no "automatic" way to do that: the system has no idea what is and isn't valid as far as your application goes and there is no way to tell it.
Instead, you read the line of data, validate it according to your rules and either report a problem and let the user try again, or continue if the data is OK.

How to I put a getline command in console app, and make sure its just getline, no other key

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How to I put a getline command in console app, and make sure its just getline, no other key

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Solution 1

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