Mã chấm: 269109

Main.cc: In function ‘double leibniz(double)’:
Main.cc:12:22: error: ‘pow’ was not declared in this scope
    result = result + pow(-1, i) / (2 * i + 1);
                      ^~~
Main.cc:12:22: note: suggested alternative: ‘putw’
    result = result + pow(-1, i) / (2 * i + 1);
                      ^~~
                      putw
Main.cc:9:7: warning: unused variable ‘count’ [-Wunused-variable]
   int count = 0;
       ^~~~~