rand() is consistent across multiple function calls

Question

When I try to generate 2 random numbers from within a function call, I\'m getting repeated results.

However, the rand() function works fine in loops or

Answer 1

It is because you call

srand( time(NULL) );

every time you use the function. Its granularity is one second, so If you call it twice within a very short time interval, you will seed the random number generator with the same value - unless the clock happens to tick just between the two calls.

You should call srand() once at the start of your program.