C# Program - Find Smallest Number among three Numbers


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Three numbers $$x$$, $$y$$ and $$z$$ are given and the smallest number among these three numbers can be found out using below methods.

Example: Using If statement

In the below example, only if conditional statements are used.

using System;

namespace MyApplication { 
  class MyProgram {
    static void smallest(int x, int y, int z) {
      int min = x;
      if (x <= y && x <= z)
        {min = x;}
      if (y <= x && y <= z)
        {min = y;}
      if (z <= x && z <= y)
        {min = z;}
      Console.WriteLine("Smallest number among " + x + ", " + y + " and " + z + " is: " + min);
    }  

    static void Main(string[] args) {
      smallest(100, 50, 25);
      smallest(50, 50, 25);
    }
  }
}

Output

Smallest number among 100 , 50 and 25 is:  25
Smallest number among 50 , 50 and 25 is:  25

Example: Using If-else statement

It can also be solved using If-else conditional statements.

using System;

namespace MyApplication { 
  class MyProgram {
    static void smallest(int x, int y, int z) {
      int min = x;
      if (x <= y && x <= z)
        {min = x;}
      else if (y <= x && y <= z)
        {min = y;}
      else 
        {min = z;}
      Console.WriteLine("Smallest number among " + x + ", " + y + " and " + z + " is: " + min);
    }  

    static void Main(string[] args) {
      smallest(100, 50, 25);
      smallest(50, 50, 25);
    }
  }
}

Output

Smallest number among 100 , 50 and 25 is:  25
Smallest number among 50 , 50 and 25 is:  25

Example: Using Nested If-else statement

The above problem can also be solved using nested if-else conditional statements.

using System;

namespace MyApplication { 
  class MyProgram {
    static void smallest(int x, int y, int z) {
      int min = x;
      if (x <= y)
        {
          if(x <= z) 
            {min = x;}
          else
            {min = z;}
        }
      else
        {
          if(y <= z) 
            {min = y;}
          else
            {min = z;}
        }
      Console.WriteLine("Smallest number among " + x + ", " + y + " and " + z + " is: " + min);
    }  

    static void Main(string[] args) {
      smallest(100, 50, 25);
      smallest(50, 50, 25);
    }
  }
}

Output

Smallest number among 100 , 50 and 25 is:  25
Smallest number among 50 , 50 and 25 is:  25

Example: Using ternary operator

The ternary operator can also be used here.

using System;

namespace MyApplication { 
  class MyProgram {
    static void smallest(int x, int y, int z) {
      int min = x;
      min = (x < y)? ((x < z)? x : z) : ((y < z)? y : z);
      Console.WriteLine("Smallest number among " + x + ", " + y + " and " + z + " is: " + min);
    }  

    static void Main(string[] args) {
      smallest(100, 50, 25);
      smallest(50, 50, 25);
    }
  }
}

Output

Smallest number among 100 , 50 and 25 is:  25
Smallest number among 50 , 50 and 25 is:  25



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