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;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;how to round a double to 2 decimal places in c++
value = round( value * 100.0 ) / 100.0; // 2 decimal places
value = round( value * 1000.0 ) / 1000.0; // 3 decimal placesround double to 2 decimal places c++
double d = 0.12345;
std::cout.precision(2); // for accuracy to 2 decimal places
std::cout << d << std::endl; // 0.12round double to 2 decimal places c++
double d;
std::cout.precision(3); // for accurancy to 3 decimal places
std::cout << d << std::endl;get number round off to two decimal places c++
float a,b,c,d,sum;
cin>>a>>b>>c>>d; // reading decimal values
sum=(a*b*c*d);
sum=round(sum*100)/100; // here it is for 2 decimal points
if((float)sum < (float) 9.58)
cout<<"YES\n";
else
cout<<"NO\n";Copyright © 2021 Codeinu
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