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Dec 21, 2011 (last update: Jan 18, 2012)

Maximum of three numbers? (For Beginners)

Score: 3.4/5 (271 votes)
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Note: This tutorial is targeting beginners that are learning C++ and programming.

How can I get the maximum of 3 numbers using the C++ programming language.

Of course you can get the maximum of 3 numbers in many ways matter of fact there can be more than one solution and they are all correct but to this specific problem I found a really interesting solution.


Here is the code I will explain it below:


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/* Function maximum definition */
/* x, y and z are parameters */
int maximum(int x, int y, int z) {
	int max = x; /* assume x is the largest */

	if (y > max) { /* if y is larger than max, assign y to max */
		max = y;
	} /* end if */

	if (z > max) { /* if z is larger than max, assign z to max */
		max = z;
	} /* end if */

	return max; /* max is the largest value */
} /* end function maximum */


The code is really simple, it assumes that any of the 3 values is the largest then compares the other 2 values to the first value.
if one of the 2 values is greater than the one we assumed then the max is equal to that value.

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mail: mfouad91@gmail.com