/C++/Round double to n decimal places c++

Round double to n decimal places c++

float roundoff(float value, unsigned char prec)
{
  float pow_10 = pow(10.0f, (float)prec);
  return round(value * pow_10) / pow_10;
}

auto rounded = roundoff(100.123456, 3);
// rounded = 100.123;

Source: stackoverflow.com

Round double to n decimal places c++

value = round( value * 100.0 ) / 100.0; // 2 decimal places
value = round( value * 1000.0 ) / 1000.0; // 3 decimal places

Source: stackoverflow.com

Similar codes

2 votes212 views1 answer
Qchar to char
C++
0 vote181 views1 answer
C++ set element at index
C++
3 votes181 views2 answers
Fast Inverse Square Root
C++
0 vote253 views1 answer
\frac{2}{5}MR^2 typed in c++
C++
1 vote185 views1 answer
Find largest number in vector c++
C++
4 votes222 views2 answers
Input pdf latex
C++
2 votes254 views2 answers
Include cpp
C++
0 vote206 views1 answer
C++ poitner
C++
0 vote185 views1 answer
Finding no of unique characters in a string c++
C++
1 vote199 views2 answers
C++ display numbers as binary
C++