setprecision 함수

#include iostream
#include iomanip
 
int main( int argc, char* argv[] )
{
        std::cout << std::setprecision( 0 );
        std::cout << 2.5 << std::endl;
        std::cout << 3.5 << std::endl;
        std::cout << 4.5 << std::endl;
 
        std::cout << std::endl;
 
        std::cout << 2.49 << std::endl;
        std::cout << 2.51 << std::endl;
        std::cout << 3.51 << std::endl;
        return EXIT_SUCCESS;
}

2
4
4
 
2
3
4

3
4
5
 
2
3
4