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cs-142:find-the-max-of-three-integers [2015/05/19 17:37] (current)
cs142ta created
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 += Find the max of three integers =
 +== Problem ==
 +* The max function that is declared in the <​algorithm>​ header returns the larger of its two arguments. Write a program that reads three floating-point numbers, uses the max function and displays the larger of all three inputs
 +== Solution ==
 +<code cpp>
 +/*
 +Test case 1: 
 +Inputs: 5,6,7 (three different numbers)
 +Expected Output: 7
 +Actual Output: 7
  
 +Test case 2:
 +Inputs: 5,6,6 (two numbers the same)
 +Expected Output: 6
 +Actual Output: 6
 +
 +Test case 3:
 +Inputs: 5,5,5 (all three numbers the same)
 +Expected Output: 5
 +Actual Output: 5
 +*/
 +#include <​iostream>​
 +#include <​algorithm>​
 +
 +using namespace std;
 +
 +/*
 + Find the max of three integers
 + @param int1 first integer
 + @param int2 second integer
 + @param int3 third integer
 + @return the max of int1, int2, int3
 +*/
 +int find_max_of_three(int int1, int int2, int int3)
 +{
 + int return_var;
 +
 + // code to modify return_var to be max of three ints
 +
 + // find the max of the first two, keep track of that
 + int max_of_first_two = max(int1, int2);
 +
 + // find max of the last and the result of previous step
 + return_var = max(max_of_first_two,​ int3);
 +
 + //this is an alternate way to do this:
 + // return_var = max(max(int1,​ int2), int3);
 + // the inner-most function is evaluated first
 +
 + return return_var;
 +}
 +
 +int main()
 +{
 + cout << "Give me three integers: ";
 +
 + // declare three storage variables
 + int a, b, c;
 +
 + // read in three integers without checking for bad input
 + cin >> a >> b >> c;
 +
 + // function to find max of three numbers
 + int max = find_max_of_three(a,​ b, c);
 +
 + // print result
 + cout << "The max of " << a << ", " << b << ", and " << c  << " is " << max << endl;
 +
 + system("​pause"​);​
 + return 0;
 +}
 +</​code>​
cs-142/find-the-max-of-three-integers.txt ยท Last modified: 2015/05/19 17:37 by cs142ta
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