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[zajac]

Got it working. Thanks for the help.

[thmm]

What was you input?

[coder777]

You need to check for fail before you do the calculation. And do not calculate when it fails, just break the loop.

[keskiverto]

You set the min from the first input.
You don't set the max from the first input.
What if all inputs are negative values? All < 0? Your max stays 0.

You don't need to treat the first value differently, if the initial values of min and max are set wisely.
See http://www.cplusplus.com/reference/limits/numeric_limits/

int max = std::numeric_limits<int>::min(); // no input can be less than this
int min = std::numeric_limits<int>::max(); // no input can be more than this