2 回答為什么 three = one + two；不能int three = one + two 嗎

1 回答three=one+two

3 回答int one = 10 ; int two = 20 ; int three = 0 ;為什么three=one+two

3 回答 int one = 10 ; int two = 20 ; int three = 0; three=one+two; three=three/one;＝０ three/=one;＝３０我始終不明白three/=one為什么等于30

2 回答three=one+two;有什么用?