How to round up the value of output in C++ ??? If Anyone knows the answer ,Please let me know.

Answer 1

At the top, put:

#include <cmath>

When you want to round and have "using namespace std;" line:

round(numbergoeshere);

When you want to round without "using namespace std;" line:

std::round(numbergoeshere);

Answer 2

There is a function round() in cmath. You may use that. Or, just cast to int using the following syntax:

double myvar;
cout<<int(myvar);

or:
cout<<static_cast<int>(myvar);

Answer 3

ceil() for round up, floor() for round down and round () for round off