External Interfaces/API Reference

mxArrayToString

Convert arrays to strings

C Syntax

• #include "matrix.h"
  char *mxArrayToString(const mxArray *array_ptr);
  

Arguments

array_ptr
   Pointer to a string mxArray; that is, a pointer to an mxArray having the mxCHAR_CLASS class.

Returns

A C-style string. Returns NULL on out of memory.

Description

Call mxArrayToString to copy the character data of a string mxArray into a C-style string. The C-style string is always terminated with a NULL character.

If the string array contains several rows, they are copied, one column at a time, into one long string array. This function is similar to mxGetString, except that:

• It does not require the length of the string as an input.
• It supports multibyte character sets.

mxArrayToString does not free the dynamic memory that the char pointer points to. Consequently, you should typically free the string (using mxFree) immediately after you have finished using it.

Examples

See mexatexit.c in the mex subdirectory of the examples directory.

For additional examples, see mxcreatecharmatrixfromstr.c and mxislogical.c in the mx subdirectory of the examples directory.

See Also

mxCreateCharArray, mxCreateCharMatrixFromStrings, mxCreateString, mxGetString

mxAddField

mxAssert