Mã chấm: 268068

Main.cc: In function ‘int main()’:
Main.cc:10:14: error: ‘doubble’ was not declared in this scope
         s=s+(doubble)pow(-1,i)/(2*i+1);
              ^~~~~~~
Main.cc:10:14: note: suggested alternative: ‘double’
         s=s+(doubble)pow(-1,i)/(2*i+1);
              ^~~~~~~
              double