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when i try to calculate any expression, I always get an integer result, it's like:

float k= 5/12;
std::cout<< k<<std::endl;

the output in the console is always 0.

Phyp
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1 Answers1

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In C/C++, this is an integer division:

5/12

What you want is a floating point division:

5.0/12.0

Please note that this has absolutely nothing to do with GLUT or OpenGL.

MrEricSir
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    `5.0/12.0` is actually a `double` division. If you want to operate on values of type `float`, it would be `5.0f/12.0f`. – Reto Koradi Nov 07 '14 at 07:03