int a = 2, b = 3;

Console.WriteLine("{0} + {1} = {2}" , a, b, a + b);

"{0} + {1} = {2}" <- ๋ณด์—ฌ์ง€๋Š” ๋ถ€๋ถ„

a, b, a + b <- ์ž‘๋™ํ•˜๋Š” ๋ถ€๋ถ„