1.解释 a+=1/a=+1/a-=1 含义 a+=1 实质等于 a += 1,也就是等于 a = a + 1: a=+1 实质等于 a = +1:[因为运算符中没有=+,很多人误以为是 a =+ 1(错误)] a-=1 实质等于 a -= 1:也就是等于 a = a - 1; 2.与 a++ / ++a 区别 a += 1 又等于 ++a -> a = a + 1; a -= 1 又等于 --a -> a = a - 1; [为什么不是等于 a++ 呢? 因为 a++ 是先进行复制再累加,而…
Train Problem I 时间限制:3000 ms | 内存限制:65535 KB 难度:2 描述 As the new term comes, the Ignatius Train Station is very busy nowadays. A lot of student want to get back to school by train(because the trains in the Ignatius Train Station is the fastest all o…