/* *C# Program to Print the Sum of all the Multiples of 3 and 5 */ using System; class program { public static void Main() { int a, b, i, Sum = 0; for (i = 1; i < 100; i++) { a = i % 3; b = i % 5; if (a == 0 || b == 0) { Console.Write("{0}\t", i); Sum = Sum + i; } } Console.WriteLine("\nThe Sum of all the Multiples of 3 or 5 Below 100 : {0}", Sum); Console.Read(); } } /* 3 5 6 9 10 12 15 18 20 21 24 25 27 30 33 35 36 39 40 42 45 48 50 51 54 55 57 60 63 65 66 69 70 72 75 78 80 81 84 85 87 90 93 95 96 99 The Sum of all the Multiples of 3 or 5 Below 100 : 2318