Thread: Making a word verification in C

  1. #1
    Registered User
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    Sep 2018
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    Lightbulb Making a word verification in C

    Hi, I have to make a code where i talk about computer hardware. Now I want to know how to make that when you type further, you go further. else you get the message, sorry, i don't know what you mean.
    Here is a bit of the code I already have:

    Code:
    char nextstap[7]={'v','e','r','d','e','r','\0'};
        puts("Hallo, dit is een programma dat gaat over randapparatuur.\n"); //intro
        puts("We gaan het over verschillende onderdelen hebben maar eerst is het handiger\n");
        puts("om het te hebben over wat randapparatuur nou daadwerkelijk is!\n");
        sleep(1);
        puts("\n");
        puts("Type 'verder' om door te gaan: ");
        if (scanf("nextstap"%c))
            {
                puts("Dit commando ken ik niet!");
            }
        else
            {
                puts("Goed, we gaan verder met de geschiedenis van randapparatuur");
            }
        return 0;
    }

  2. #2
    Registered User
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    sorry, verder means further

  3. #3
    and the hat of int overfl Salem's Avatar
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    The best way forward is to do something like
    Code:
    char buff[BUFSIZ];
    if ( fgets(buff,sizeof(buff),stdin) != NULL ) {
        if ( strlen(buff) == strlen(nextstap)+1 && strncmp(buff,nextstap,strlen(nextstap) == 0 ) {
            // the string is the right length, and matches what we want.
        } else {
            // user typed in either
            // verder + more letters
            // something other than verder
        }
    } else {
        // fgets detected eof or error
    }
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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