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インクリメント演算子(++)・デクリメント演算子(--)

Last updated at Posted at 2022-12-24

説明

変数の値に「1」を加算・減算するための演算子である。前置「++a」と後置「a++」がある。前置は、演算結果が代入されることに対し、後置は、元の値のコピーが戻されてから、変数の値が加算される。

public class Main {
	public static void main(String[] args) {
        
        //前置と後置の違い
        int a = 10;
        int b = ++a;//b = 1 + 10
        int c = a++;//c = 11 → a = 12
        
        int d = 10;
        int e = d++ + d + d-- - d-- + ++d;//10 + 11 + 11 -10 + 10
	}
}	
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