Thread: Random letters

  1. #1
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    Random letters

    How would I use rand() to use letters other than numbers? I only want a-z and the first letter to be capitol.

  2. #2
    Registered User Zeeshan's Avatar
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    char unknown = (rand() % 26) + 'a';
    putc(unknown);

  3. #3
    Confused Magos's Avatar
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    Don't forget to seed the random number generator with srand(...);
    MagosX.com

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  4. #4
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    you just have to get a random number between 0 and 255 for a signed char. -128 and 127 for unsigned (are those numbers right?).

  5. #5
    just make it come up with a random number from 1 to 26. But I guess I'm late, aren't I?

  6. #6
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    i'm sure one of these other replys would work better but a really simple way to do it is to use

    Code:
    #include<stdio.h>
    #include<iostream.h>
    
    int main()
    
    int mynumber;   // declare the variable
    char myletter[2];     
    
    
    //can't think of the code but srand() would go here
    mynumber= rand()%25 + 1;   //get a random number between 1 and 26
    
    switch(mynumber)
    {
         case 1:
         {
                strcpy("A" , myletter);    copy 'A' into myletter
                break;
          }    //end case
          case 2:
          {
                 strcpy("B", myletter);
                 break;
           }
    
    }  //end switch     
    
    return 0;
    
    }//end main
    once again this code is probably the simplest and most ineffecient way to do this but should work. Hoipe i was of some help.
    Oi Oi Oi!!!!

  7. #7
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    oh lord, that is rather inefficient ... no use in using switch ... and instead of using an array, use just one char ...

  8. #8
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    something like this?

    if you want the first letter to be capitalized i assume you are looking for a completely random word?

    void randomWord(char *word, int length)
    {
    word[0] = (rand() % 26) + 'A';

    for(int i=1; i < length; i++)
    word[i] = (rand() % 26) + 'a';
    }

  9. #9
    i dont know Vicious's Avatar
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    you could store letters and numbers or what ever in an array...

    Code:
    char randstuff[5] = {'A', '>', '2', 'r', 'R', '6'}
    then get a random number between 0 and 6 is it?

    any way assign a variable like `i' or some thing to the random number

    then
    Code:
    cout << randstuff[i];

    note: forgive me... im half asleep...
    What is C++?

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