chéng / xù / yuán / zài / dài / mǎ / zhōng / jiā / rù / le / chū / shǐ / huà / biàn / liàng / de / bù / zhòu / , / bì / miǎn / le / yùn / xíng / cuò / wù / 。程序员在代码中加入了初始化变量的步骤,避免了运行错误。Programmers added the step of initializing variables in the code to avoid runtime errors.