_CP_casing is equivalent to the casing expression BASIC statement.
int _CP_casing(int expression)
This function returns -1 if an error occurs. The error code is contained in _CP_errno.
CPSTR * s = _CP_mkstr("a"); CPSTR * t = _CP_mkstr("A"); int i; _CP_unix_env(); /* default is casing off - print 0 */ _CP_compare(&i,s,t); printf("%d\n",i); /* turn casing on - print 1 */ _CP_casing(1); _CP_compare(&i,s,t); printf("%d\n",i);