TA貢獻3條經驗 獲得超1個贊
++是有兩種情況的,如:
a++;
++a;
這兩個語句在不賦值時,兩個語句執行完后,都是自加? 1。
但是:
a = 1;
b=a++;
和
b=++a;
是不同的,前者b = 1,a = 2;
后者b = 2, a = 2;
兩者最大區別就是先運算再賦值,還是先賦值再運算!
所以:
score++;可以寫成score = ++score;
不能寫成score = score++;
TA貢獻868條經驗 獲得超0個贊
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