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reference: 

Problem Definition:

Write a C program to find the smallest of three integers, without using any of the comparison operators.

Let 3 input numbers be x, y and z.

Solution:

Use method 2 of  (We can’t use Method 1 as Method 1 uses comparison operator). Once we have functionality to find minimum of 2 numbers, we can use this to find minimum of 3 numbers.

Code:

/*Function to find minimum of x and y*/int min(int x, int y){  return  y + ((x - y) * ((x - y) >>            (sizeof(int) * CHAR_BIT - 1)));} /* Function to find minimum of 3 numbers x, y and z*/int smallest(int x, int y, int z){    return min(x, min(y, z));}

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