C programming practice. You dont have to generate random number to make it easier.

Generate two random numbers (X_0 and x_1) between 0.0 and 100.0 and compute their difference that is always positive. Repeat this for N times and find the average and the standard deviation of the differences. You'd better use the function rx_range(). Your program will read your input N from keyboard and use a while-loop statement for the repetition. If you choose a random number between 0 and 100 uniformly, the expected number is 50. But, if you choose two random numbers in the range where each expected values are 50, will the expected difference of numbers will be 0 (zero)