Question

I need to contain integers for several(n) different float values.

• for example: for float number 1,465658 I need to contain number 1 and I need to be able to manipulate
  the integer number at any time.

Is there some container for it in C++ or do I have to do some multidimensional array(if yes which)?

something like: float[1,465658]=3;
new float[1,98978]=0;

Answer 1

std::map? As long as your keys are unique.

std::map<double, int> myMap;
myMap[1.2465468] = 1;

Be aware that you may encounter some floating point rounding imprecision depending on the granularity of your values, and you may end up overwriting existing entries.