Random funtion???
Do you know are there any random funtions in c ?
if yes, how can i use it?(rand () funtion)
You should call srand(time(0)) at the beginning of your program to set the random seed (only once)
Then, any time you want a random number call rand() which returns a number from 0 to RAND_MAX.
If you want a range from 0 to n-1, use rand()%n
Then, any time you want a random number call rand() which returns a number from 0 to RAND_MAX.
If you want a range from 0 to n-1, use rand()%n
Most would recommend random() and srandom(seed) over rand and srand. It works exactly the same way. Just include stdlib.h and seed with srandom(time(0)).
If you are on a windows platform, the best way (without downloading additional libraries) is to use rand_s(). The differences between the different functions listed her would be negligible in most cases though, I'm sure any of these will be fine for your needs.
rossipoo: No idea what stdlib.h you're looking at, but those functions are definitely not in the C89 standard library.
Tevsky: Why introduce unportable functions when something different would fit the need perfectly?
Tevsky: Why introduce unportable functions when something different would fit the need perfectly?
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