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ceil()Prototype: double ceil(double x);Header File: math.h (C) or cmath (C++) Explanation: Use this to round a number up. It returns the smallest integer greater than or equal to x. ANSI: C and C++ Example:
//Program uses ceil to round a decimal number up.
//Program also shows using ciel to round division up.
#include <cmath>
#include <iostream>
int main()
{
cout<<ceil(2.0/4.0);
double x=.4;
cout<<ceil(x);
}
Other Functions
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