Testing the math library functions. - C++ Function

C++ examples for Function:Math Function

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Description

Testing the math library functions.

Demo Code

#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;

int main() {//w w  w .  j  ava 2 s  . c  om
   cout << fixed << setprecision(1);

   cout << "sqrt(" << 9.0 << ") = " << sqrt(9.0);
   cout << "\nexp(" << 1.0 << ") = " << setprecision(6) << exp(1.0) << "\nexp(" << setprecision(1) << 2.0 << ") = " << setprecision(6) << exp(2.0);
   cout << "\nlog(" << 2.718282 << ") = " << setprecision(1) << log(2.718282) << "\nlog(" << setprecision(6) << 7.389056 << ") = " << setprecision(1) << log(7.389056);
   cout << "\nlog10(" << 10.0 << ") = " << log10(10.0) << "\nlog10(" << 100.0 << ") = " << log10(100.0);
   cout << "\nfabs(" << 5.1 << ") = " << fabs(5.1) << "\nfabs(" << 0.0 << ") = " << fabs(0.0)
      << "\nfabs(" << -8.76 << ") = " << fabs(-8.76);
   cout << "\nceil(" << 9.2 << ") = " << ceil(9.2)<< "\nceil(" << -9.8 << ") = " << ceil(-9.8);
   cout << "\nfloor(" << 9.2 << ") = " << floor(9.2)<< "\nfloor(" << -9.8 << ") = " << floor(-9.8);
   cout << "\npow(" << 2.0 << ", " << 7.0 << ") = "<< pow(2.0, 7.0) << "\npow(" << 9.0 << ", "<< 0.5 << ") = " << pow(9.0, 0.5);
   cout << setprecision(3) << "\nfmod(" << 2.6 << ", " << 1.2 << ") = "<< fmod(2.6, 1.2) << setprecision(1);
   cout << "\nsin(" << 0.0 << ") = " << sin(0.0);
   cout << "\ncos(" << 0.0 << ") = " << cos(0.0);
   cout << "\ntan(" << 0.0 << ") = " << tan(0.0) << endl;
}

Result


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