摘要： ++[搜狗百科] //先用后加与先加后用 1 int a = 7; 2 int b = ++a; //int b = a += 1; 3 int c = a++; //int c = a; a++; 4 Console.WriteLine("{0} {1} {2}",a,b,c); //9 8 8 阅读全文