/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

0 vote144 views1 answer
C++ meaning ::
C++
14 votes136 views1 answer
C++ optimization dynamic 2d array
C++
2 votes124 views1 answer
Conditional cout in c++
C++
1 vote80 views1 answer
Cheak a number is positive are negative in c ++ in loop
C++
0 vote133 views1 answer
Print all even number using for loop c++
C++
0 vote142 views1 answer
How to install opencv c++ on windows vscode
C++
3 votes132 views1 answer
Find in set of pairs using first value cpp
C++
2 votes141 views1 answer
C++ flush stdin
C++
6 votes134 views1 answer
C++ replace character in string
C++
5 votes122 views5 answers
How to convert char to int in c++
C++