Run id: 154676

Main.cc: In function 'int main()':
Main.cc:9:13: error: 'PI' was not declared in this scope
     v=4.0/3*PI*n*n*n;
             ^
Main.cc:5:18: warning: unused variable 'pi' [-Wunused-variable]
     const double pi=3.1415926;
                  ^