{{keywords>wiki library source code example reference}}
====== ceil ======

<code cpp>
     double ceil(double);
</code>
rounding up floating point

===== cpp Sourcecode Example =====

<code cpp>     
#include <iostream> /* including standard library */
#include <cmath> /* including math library */

using namespace std;
int main ( void )
{
  double res = 0;
  res = ceil (4.2);
 
  //cout.setf(ios::fixed, ios::floatfield);
  cout.precision(8);

  cout << "ceil from 4.2 is " << res << endl;
  return 0;
}
</code>
===== output =====
    ceil from 4.2 is 5