The c32rtomb() is a built-in function in C/C++ which converts 32 bit character representation to a narrow multibyte character representation. It is defined within the uchar.h header file of C++.
size_t c32rtomb(char* s, char32_t c32, mbstate_t* p)
Parameters: The function accepts three mandatory parameters as shown below:
- s: specifies the string where the multibyte character is to be stored.
- c16: specifies the 32 bit character to convert.
- p: specifies the pointer to an mbstate_t object used when interpreting the multibyte string.
Return Value: The function returns two values as shown below:
- On success of the program, the function returns the number of bytes written to the character array pointed to by s.
- If failed, then -1 is returned and EILSEQ is stored in err no.
Note: There is no output in the above program since it is a case of failure.
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