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size_t len;
char cstr[] = "char string";
signed char scstr[] = "signed char string";
unsigned char ucstr[] = "unsigned char string";

len = strlen(cstr);
len = strlen(scstr);  /* warnsWarns when char is unsigned */
len = strlen(ucstr);  /* warnsWarns when char is signed */

Compiling at high warning levels in compliance with MSC00-C. Compile cleanly at high warning levels causes warnings to be issued when

• converting Converting from unsigned char[] to const char * when char is signed.
• converting Converting from signed char[] to const char * when char is defined to be unsigned.

Casts are required to eliminate these warnings, but excessive casts can make code difficult to read and hide legitimate warning messages.

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