What does this line of code mean?

Question

I am wondering what this line of code mean?

b = (gen_rand_uniform()>0.5)?1:0;

The gren_rand_uniform() is a function to generate

Answer 1

It's shorthand. In the example you gave, it is equivalent to:

if (gen_rand_uniform() > 0.5) {
    b = 1;
} else {
    b = 0;
}

Since gen_rand_uniform() probably generates uniformly distributed random numbers between 1 and 0, there's a 50% chance of the value being higher than 0.5. Which means there's a 50% chance of getting a 1 or a 0