[Branden Ghena]

Well, from what I can see you have a basic logic issue that probably comes from a series of typos.

Here is your code (note problems in red):

/* Find the largest number *'


if (input_1 >= input_2 && input_1 >= input_3) {
high_value = input_2;

}
else if (input_2 >= input_2 && input_2 >= input_3) {
high_value = input_2;
}

else if (input_3 >= input_1 && input_3 >= input_2) {
high_value = input_3;
}

This is what the code was probably meant to be (note changes in green):

/* Find the largest number *'


if (input_1 >= input_2 && input_1 >= input_3) {
high_value = input_1;

}
else if (input_2 >= input_1 && input_2 >= input_3) {
high_value = input_2;
}

else if (input_3 >= input_1 && input_3 >= input_2) {
high_value = input_3;
}

Now, its worth noting that there is a more efficient way to find the highest if you think about it logically.

/* Find the largest number *'

high_value = input_1;

if (input_2 >= high_value) {
     high_value = input_2;
}

if (input_3 >= high_value) {
    high_value = input_3;
}

But that is not really important because your method should work just fine if the mistypes are corrected.