Strings in Scanf function

This is a discussion on Strings in Scanf function within the C Programming forums, part of the General Programming Boards category; I'm trying to write a program where the user inputs a word, here is an example: Enter home team : ...

  1. #1
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    Strings in Scanf function

    I'm trying to write a program where the user inputs a word, here is an example:

    Enter home team : UF
    Enter visitor: Miami
    Enter game date (mm/dd/yyyy): 09/06/2008

    Home Visitor Date
    ------- ------- -----
    UF vs Miami on 09/06/2008




    Here is the code I have:

    Code:
    #include<stdio.h>
    
    int main(void)
    {
    
       char h_team, v_team;
       int date;
    
       printf("\nEnter home team: ");
       scanf("%c", &h_team);
    
       printf("Enter visitor: ");
       scanf("%c", &v_team);
    
       printf("\nEnter game date (mm/dd/yyyy): ");
       scanf("%d/%d/%d", &date);
    
      
       printf("\nHome\t  \tVisitor\t  \tDate");
       printf("\n----\t  \t-------\t  \t----");
       printf("\n%c\tvs\t%c\ton\t%d\n", h_team, v_team, date);
    
    
       return(0);
    }

    I know that %c only grabs a single character, so how do I grab several characters without having to use arrays...

    Thanks

  2. #2
    and the Hat of Guessing tabstop's Avatar
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    If you don't want to use arrays, where do you propose to store all these letters?

  3. #3
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    is there another way?

  4. #4
    and the Hat of Guessing tabstop's Avatar
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    Quote Originally Posted by dcwang3 View Post
    is there another way?
    Not really, no.

  5. #5
    Jack of many languages Dino's Avatar
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    No, nothing that would make for an understandable and serviceable program.
    Mac and Windows cross platform programmer. Ruby lover.

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    12/20: Mario F.:I never was, am not, and never will be, one to shut up in the face of something I think is fundamentally wrong.

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  6. #6
    Banned master5001's Avatar
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    Had Dino not stated his two cents above, I would say you could use a double or something...

    Code:
    scanf("&#37;d/%d/%d", &date);
    That is a dubious looking line of code right there.

  7. #7
    and the Hat of Guessing tabstop's Avatar
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    Dubious is not the word. (You sell yourself way too short.)

  8. #8
    Jack of many languages Dino's Avatar
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    Dino says not dubious.
    Mac and Windows cross platform programmer. Ruby lover.

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  9. #9
    Banned master5001's Avatar
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    One thing I do not understand is when someone manages to actually compile something that every compiler that I commonly use (even some junky ones for some embedded machines) does issue warnings upon compilation. Though, I suppose that means even my nagging compilers will do the build too... But sometimes those warnings translate into massively destructive run-time errors.

  10. #10
    Registered User C_ntua's Avatar
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    1) For some reason ppl are happy when the program runs and don't pay attention on the errors
    2) Or they don't enable all the warnings (like with -Wall in gcc)

  11. #11
    Frequently Quite Prolix dwks's Avatar
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    Just a suggestion: instead of using slashes in a scanf format string like "&#37;d/%d/%d", you can use %*c, which ignores any character. That is, with a format string like "%d%*c%d%*c%d", the user can enter "1/2/3" or "1-2-3" or whatever.
    dwk

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  12. #12
    Jack of many languages Dino's Avatar
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    Quote Originally Posted by dwks View Post
    Just a suggestion: instead of using slashes in a scanf format string like "%d/%d/%d", you can use %*c, which ignores any character. That is, with a format string like "%d%*c%d%*c%d", the user can enter "1/2/3" or "1-2-3" or whatever.
    You learn something new every day!! Thanks dwks.
    Mac and Windows cross platform programmer. Ruby lover.

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    Amen brother!

  13. #13
    Banned master5001's Avatar
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    Quote Originally Posted by dwks View Post
    Just a suggestion: instead of using slashes in a scanf format string like "%d/%d/%d", you can use %*c, which ignores any character. That is, with a format string like "%d%*c%d%*c%d", the user can enter "1/2/3" or "1-2-3" or whatever.
    I think learning how to correctly use scanf() would be the most logical first step for dcwang3.

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    here is my updated code:

    Code:
    #include<stdio.h>
    
    int main(void)
    {
      int month, day;
      char h1, h2, h3, h4, h5;
      char v1, v2, v3, v4, v5;
    
      printf("\nEnter home team: ");
      scanf("%c%c", &h1, &h2);
    
      printf("Enter visitor: ");
      scanf("%c%c%c%c%c", &v1, &v2, &v3, &v4, &v5);
    
      printf("Enter game date (mm/dd): ");
      scanf("%d/%d", &month, &day);
    
      printf("\nHome\t  \tVisitor\t  \tDate");
      printf("\n----\t  \t-------\t  \t----");
      printf("\n%c%c  \t vs\t%c%c%c%c%c\t   on\t%d/%d/2008\n\n", h1, h2, v1, v2, v3, v4, v5, month, day);
    
      return(0);
    }

    here is my output:

    Enter home team: UF
    Enter visitor: Miami
    Enter game date (mm/dd):
    Home Visitor Date
    ---- ------- ----
    UF vs
    Miam on 0/0/2008


    (well that's sort of the output, the dashed lines are lined us with visitor and date), it's just the way copy and pasted worked through my mac terminal window.


    When I complete Miami, it skips the enter game date, and formats it. Even though it seems to me that I have the formatting uniform, it outputs like a mess. Can someone help me straighten it out???

    Thanks

  15. #15
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    the professor doesn't want us to use strings and arrays, just because we haven't covered that. If that wasn't the case, I would use it, but that's not so that's why I am here asking questions about using single characters and printing out strings....

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