Anna Sidera <sidera.anna@xxxxxxxxx> writes: >>From this, can I find out when the numbers start repeating? How can I find it? I cannot find the period using > > man rand This question really doesn't have anything to do with gcc. gcc does not provide a rand function. The rand function will come from your C library, and gcc does not include a C library. If you are using GNU glibc, which is probably the case if you are using a GNU/Linux system, then rand is not implemented as a linear congruential generator, and the period is quite long. See the source code. Ian
