A c++ code for calculating pi value.

Finally I am successful in calculating pi value -- less than 0.3% error, by using random number generation. Although my computer needs some fixation on its compiler or path definition etc, there are very good online compilers which helps in testing and running c++ codes: try the given link. OUTPUT Computing the value of pi using std::rand() Enter number of trials: 10000 Enter number of random (x,y) points per trial: 10 pi = 3.14376 +- 0.00519107 average - exact = 0.00216735 CPU time = 0.004027 secs Here is the code I found by searching a good deal on the web. Yes I did tinker around but only because my own compiler (Turbo C++ on windows 10, 64 bits) was throwing some exceptions on the included headers. #include #include #include #include //#include using namespace std; double pi_estimate(const unsigned long points)