Generating random letters

**ominub** · 04-28-2009

im writing a program for practice that writes 1000 random words to an output file. the random words dont have to actual words just a bunch of lower case letters strung together in random lengths of 3 - 9 letters.

im guessing that i would need to generate random numbers 0-25 and then add 65 to correlate them to ascii. I dont know what function to use to generate random numbers between 0 and 25 and i cant really figure out how to add them together in random lengths of 3 - 9 letters.

here is my attempt:

Code:

void rand_words() {
    int     i = 0, j = 0; 
    int     rand_num = 0;
    int     n;
    char    word[10];


        for( i=0; i<=1000; i++) {
            n = random_num_gen(0-25); // not a clue...
            n += 65;
            // need a line to convert numbers to letters
            rand_num = random_num_gen(3-9); // again, no idea what this function needs to be
            
            for( j=0; j<=rand_num; j++) {
                word += n;
            }
                
                
                
            fprintf("%s\n", word)
        }
        
}

i havent even tried to compile this but im pretty sure i got most of what i need

**quzah** · 04-28-2009

Code:

for( x = 0; x < numberofwords; x++ )
{
    numberofletters = 3 + rand() % 7;
    for( y = 0; y < numberofletters; y++ )
    {
        fputc( 'a' + ( rand( ) % ('z' - 'a') ), here );
    }
    fputc( '\n', here );
}

Look at the FAQ on generating random numbers.

Quzah.

**ominub** · 04-28-2009

yeah, that didnt really help. i've looked at the FAQ's but i cant find anything on how to generate random #s between two numbers

**quzah** · 04-28-2009

Originally Posted by ominub

yeah, that didnt really help.

Then you're dumb. I basically did the entire thing for you.

Originally Posted by ominub

i've looked at the FAQ's but i cant find anything on how to generate random #s between two numbers

Then you're an idiot, or you're illiterate. Sheesh, do I have to do EVERYTHING for you?

Now this may be tricky, but that red thing there is a link. You should click on it. Then you should read.

Quzah.

**ominub** · 04-28-2009

well, shucks. thank you o' great one. i didnt ask you to write the program. i asked how to generate random numbers.

**quzah** · 04-28-2009

I showed you how to generate random numbers, and I told you the FAQ covered it as well. It's not my fault you can't read.

Quzah.

**iMalc** · 04-29-2009

Originally Posted by ominub

yeah, that didnt really help. i've looked at the FAQ's but i cant find anything on how to generate random #s between two numbers

I think quzah went a bit far, he must be having a bad day to break out the personal attacks. I can certainly agree with his bluntness though in that, in addition to not being able to search the FAQ properly, you have a terrible case of googleblindness. This search was the first thing that popped into my head:
random number between two numbers in C - Google Search
To make it as a programmer, you have to learn to be able to find things out for yourself.

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