Fixed values of randn at starting?

I am using 'randn' function but on every run values is keep changing,how can i fixed that?

[KSSV]

The purpose of randn is to generate Normally distributed random numbers. It keeps changing for every call. Read the documentation.

Answer 1

[Guillaume]

If you want to have the same stream of random numbers every time you run your code, simply set the seed of the random generator to a constant value of your choice, using rng

>>rng(1234);  %choose whatever number you want
>>randn(1, 2)
ans = 
      -0.947246643957371         0.540149747070348
>>randn(1, 2)
ans = 
      -0.216602140976276          1.18903197494834
>>%...later
>>rng(1234);  %same seed as before, produces the same sequence
>>randn(1, 2)
ans = 
      -0.947246643957371         0.540149747070348
>>randn(1, 2)
ans = 
      -0.216602140976276          1.18903197494834