How to find and display the Multiplication Table in C#?

A multiplication table displays the product of a number with a sequence of other numbers. In C#, you can generate and display multiplication tables using loops and formatted output. This is useful for educational applications, mathematical calculations, or creating reference tables.

Syntax

The basic structure for creating a multiplication table uses a loop with formatted output −

while (counter <= limit) {
    Console.WriteLine("{0} x {1} = {2}", number, counter, number * counter);
    counter++;
}

You can also use a for loop for more concise code −

for (int i = 1; i <= limit; i++) {
    Console.WriteLine("{0} x {1} = {2}", number, i, number * i);
}

Using While Loop

The while loop approach gives you control over the increment and allows for custom conditions −

using System;

public class Demo {
    public static void Main() {
        int n = 4, a = 1;
        
        Console.WriteLine("Multiplication Table of " + n);
        Console.WriteLine("------------------------");
        
        while (a <= 10) {
            Console.WriteLine("{0} x {1} = {2}", n, a, n * a);
            a++;
        }
    }
}

The output of the above code is −

Multiplication Table of 4
------------------------
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
4 x 10 = 40

Using For Loop

A for loop provides a more compact solution for generating multiplication tables −

using System;

public class Demo {
    public static void Main() {
        int number = 7;
        
        Console.WriteLine("Multiplication Table of " + number);
        Console.WriteLine("------------------------");
        
        for (int i = 1; i <= 12; i++) {
            Console.WriteLine("{0} x {1} = {2}", number, i, number * i);
        }
    }
}

The output of the above code is −

Multiplication Table of 7
------------------------
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
7 x 10 = 70
7 x 11 = 77
7 x 12 = 84

Multiple Tables at Once

You can also generate multiple multiplication tables using nested loops −

using System;

public class Demo {
    public static void Main() {
        Console.WriteLine("Multiplication Tables (1 to 3)");
        Console.WriteLine("==============================");
        
        for (int table = 1; table <= 3; table++) {
            Console.WriteLine("\nTable of " + table + ":");
            for (int i = 1; i <= 5; i++) {
                Console.WriteLine("{0} x {1} = {2}", table, i, table * i);
            }
        }
    }
}

The output of the above code is −

Multiplication Tables (1 to 3)
==============================

Table of 1:
1 x 1 = 1
1 x 2 = 2
1 x 3 = 3
1 x 4 = 4
1 x 5 = 5

Table of 2:
2 x 1 = 2
2 x 2 = 4
2 x 3 = 6
2 x 4 = 8
2 x 5 = 10

Table of 3:
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15

Comparison of Approaches

Conclusion

Generating multiplication tables in C# is straightforward using loops and formatted output with Console.WriteLine(). Choose while loops for custom conditions, for loops for simple sequential tables, and nested loops when generating multiple tables at once.