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Christos
 2 years ago
C++
Help needed!
The program I need to build is supposed to do this:
http://screencast.com/t/qbp34sVfC
Christos
 2 years ago
C++ Help needed! The program I need to build is supposed to do this: http://screencast.com/t/qbp34sVfC

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Christos
 2 years ago
Best ResponseYou've already chosen the best response.0// // main.cpp // week544 #include <iostream> #include <cmath> using namespace std; int main() { double a; cin >> a; if (sqrt(a)%1.0 == 0) cout << "It's an integer."; else cout << "It's NOT an integer. Sorry."; return 0; }

Christos
 2 years ago
Best ResponseYou've already chosen the best response.0This is the code I created for the problem. I don't know why it doesn't run. Can you help me spot the problem?

eSpeX
 2 years ago
Best ResponseYou've already chosen the best response.0You cannot use the modulus operator with a double.

Christos
 2 years ago
Best ResponseYou've already chosen the best response.0what is a "modulus operator" ?

eSpeX
 2 years ago
Best ResponseYou've already chosen the best response.0Use this instead: if (fmod(sqrt(a),1.0) == 0)

Christos
 2 years ago
Best ResponseYou've already chosen the best response.0wait a min, but why I cant use % with doubles?

eSpeX
 2 years ago
Best ResponseYou've already chosen the best response.0Because it is designed to take an integer.

Anniepoo
 2 years ago
Best ResponseYou've already chosen the best response.0You might also have trouble with the == it's always iffy to compare doubles. think of all the times a computer's told you 2.0 + 2.0 = 3.99999999
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