用while语句计算1+（1+2）+（1+2+3）+...(1+

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 int a = 1, b = 0, c = 0;
            while (a <= 10)
            {
                b += a;
                c += b;
                a++;
                Console.WriteLine(b);
            }
            Console.WriteLine("前面的数相加为" + c);