CreateDirectory["dir"] creates a directory with name dir. CreateDirectory[] creates a directory in the default area for temporary directories on your computer system.

CreateDocument[] creates an empty document notebook and opens it in the front end.CreateDocument[expr] creates and opens a document notebook containing the expression ...

CreateIntermediateDirectories is an option for CreateDirectory and related functions that specifies whether to create intermediate directories in a directory path specified.

CreatePalette[expr] creates a palette notebook containing expr, and opens it in the front end.CreatePalette[{expr_1, expr_2, ...}] creates and opens a palette notebook ...

CreateScheduledTask[expr] creates a task that will repeatedly evaluate expr once per second.CreateScheduledTask[expr, time] creates a task that will repeatedly evaluate expr ...

CreateWindow[] creates an empty window in the front end.CreateWindow[nb] creates a window displaying the notebook expression nb, and opens it in the front ...

CriticalSection[{var_1, var_2, ...}, expr] locks the variables var_i with respect to parallel computation, evaluates expr, then releases the var_i.

CrossingDetect[image] gives a binary image in which white pixels correspond to the zero crossings in image.CrossingDetect[image, delta] treats values in image that are ...

CrossMatrix[r] gives a matrix whose elements are 1 in a centered cross-shaped region that extends r positions along each index direction, and are 0 otherwise.CrossMatrix[r, ...

Cross[a, b] gives the vector cross product of a and b.