char b_main_source(char data);void _main(){char data;data=' ';data=b_main_source(data);{char result=data-1;printHexCharLine(result);}}char b_main_source(char data){fscanf (stdin, "%c", &data);return data;}
static void main(){char data;data=' ';data=b_main_source(data);{char result=0;if (data > CHAR_MIN){result=data-1;printHexCharLine(result);}else{printLine("Input value is too small to perform arithmetic safely.");}}}char b_main_source(char data){fscanf (stdin, "%c", &data);return data;}