simple question URGENT

This is a discussion on simple question URGENT within the C Programming forums, part of the General Programming Boards category; hi all say if i were to use getchar(); and i was to the character as many times as it's ...

  1. #1
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    simple question URGENT

    hi all
    say if i were to use getchar(); and i was to the character as many times as it's entered (since it's goign to be a in a loop) yet for the last repetition, it is a different character, for example;
    if i entered rrrr and i wanted the last character to be changed to t. the end character is defined to be preceeding a end of character ascii digit (10).
    it would produce rrrt
    thanks in advance.
    Last edited by captain_jack; 03-23-2006 at 08:29 AM.

  2. #2
    Registered User hk_mp5kpdw's Avatar
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    I have no idea what you just said. Can you restate the question more clearly?
    "Owners of dogs will have noticed that, if you provide them with food and water and shelter and affection, they will think you are god. Whereas owners of cats are compelled to realize that, if you provide them with food and water and shelter and affection, they draw the conclusion that they are gods."
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    lets say my input was of unknown length of a single character repeated a number of times (through getchar())
    such as rrrrrr or whatever
    and i had to convert it to repeat what i said (echo) except for the last character which had to be converted to a particular letter. the question that im doing is asking me to convert the last letter of the input characters into t
    so if i run the program and type in "rrrr"
    it would echo all of it except for the last letter which would write a z instead, so it would produce "rrrt"
    with the same program, if i inputted "rrrrrrrrrr" it would print "rrrrrrrrrt" (jus the last character is converted into a different predefined chracter. note that an input of 'r' would give the output 't'.
    this is done using while loop with getchar and if/else statements
    but i dont know how to do it
    thanks!

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    So do you want to echo it as you type, or once return is pressed? Does is need to be a single repeated char? eg if you entered rrrrrrrrrssssssssss what would you expect? rrrrrrrrtssssssssst ?

  5. #5
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    Count the characters entered. Output the character count-1 times. Then output the new character.
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    Quote Originally Posted by WaltP
    Count the characters entered. Output the character count-1 times. Then output the new character.
    sorry i dont know how to count the times itwas entered??

    also
    how would i get a new line in a situation like this

    Code:
    #include <stdio.h>
    
    int
    main (int argc, char **argv)
    {
        
    char ch;
     
     
      
        while ((ch=getchar()) !=EOF){
           
            
        
          if(ch =='r'){
             printf("t");
          }
          
        return 0;
        
    }

    HELPP it prints t, but then when i start to type more text into the program (line by line) it isn't on a new line!!!
    i tried putting printf("\n"); in multiple spots but its not working
    thanks!!!

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    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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    yeah sorry it is
    where im from i posted that in the middle of the night
    thanks for the replies

  9. #9
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    Quote Originally Posted by captain_jack
    sorry i dont know how to count the times itwas entered??
    Really? Did you think about it for a moment? Using your code:
    Code:
    while ((ch = getchar()) != EOF)
    {
        count++;
        if(ch =='r')
        {
            printf("t");    // putchar('t'); would be a better choice here.
        }
        return 0;
    }
    Oh, and work on your formatting. Whitespace is your friend on a line, but not as much between lines. And consistant indenting really helps readability -- as I formatted above...
    Definition: Politics -- Latin, from
    poly meaning many and
    tics meaning blood sucking parasites
    -- Tom Smothers

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