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C ++ conventional rounding function has three ceil, floor, round
ceil English definition: means ceiling, the grid plate shipment; function is a function of rounding up
floor English definition: floor; ground floor; function is a function rounding down
round of English Interpretation: about; function is a function of rounding
Example:
the _tmain int (int argc, _TCHAR * the argv [])
{
a float NUM = 8.6f;
STD :: COUT NUM << << "rounded up as:" << ceil (NUM) STD :: << endl;
STD: : cout << num << "rounded down to:" << Floor (NUM) STD :: << endl;
STD :: COUT NUM << << "rounded to:" << round (num) << :: endl STD;
getchar ();
return 0;
}
The result:
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