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CODE EXAMPLE FOR CPP

how to specify the number of decimal places in c++

#include<bits/stdc++.h>
using namespace std;
int main ()
{
    double A, n, R, Square_of_R;
    cin >> R;
    Square_of_R = pow(R,2);
    n = 3.14159;
    A = n * Square_of_R;
    cout << "A=" << fixed << setprecision(4) << A << endl; 
  	//printf("A=%.4lf", A);
    return 0;
}
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Tagged: #number #decimal #places
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