void _main(){char data;_union_type my_union;data=' ';data=(char)rand();my_union.a=data;{char data=my_union.b;{char result=data-1;printHexCharLine(result);}}}
static void main(){char data;_union_type my_union;data=' ';data=(char)rand();my_union.a=data;{char data=my_union.b;{char result=0;if (data > CHAR_MIN){result=data-1;printHexCharLine(result);}else{printLine("Input value is too small to perform arithmetic safely.");}}}}