>> which crand -all % -all toolboxes that are installed on my PC
C:\Program Files\MATLAB\R2018b\toolbox\robust\rctutil\crand.m
>> help crand
out = crand(dim1,dim2)
Complex random matrix generator: generates a complex,
random matrix with a uniform distribution of dimension
DIM1 x DIM2. If only one dimension argument is given,
the output matrix is square.
See also crandn, rand, randn and sysrand.
Star Strider's proposal is worth better than being deleted. Try this:
crand = @(m,n) randn(m,n) + 1i*randn(m,n);
C = crand(2,2)
Experiment to get different results, including with different random number generator functions
