先謝謝各位大神了?nt[] grade = new int[] { 90, 65, 88, 70, 46, 81, 100, 68 };??????????? int a = array.indexof(grade,90);、報錯當前上下文不存在名稱“array”是因為少了命名空間嗎,如果是少了哪個using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Collections;
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