又不学c了,完犊子。
https://blog.csdn.net/xyx_x/article/details/90202813 //format函数
https://blog.csdn.net/bcs_01/article/details/79373322?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-4.channel_param&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-4.channel_param //if
https://blog.csdn.net/violet_echo_0908/article/details/52052054 //pass
https://blog.csdn.net/weixin_42668123/article/details/81586618 //for
时间不等人啊!!!
浪费了好多时间。