Trump told reporters Obama was an “ineffective” and “terrible” leader.

“I see the horror that he’s left us, the stupidity of the transactions that he made,” Trump said.

“President Obama did not do a good job. The reason I’m here is because of President Obama and Joe Biden,” he said.

Obama had accused Trump of never showing “interest in taking the job seriously,” in excerpts of his speech at the Democratic convention.

“I did hope, for the sake of our country, that Donald Trump might show some interest in taking the job seriously…. But he never did,” the US 44th president said.

“He’s shown no interest in putting in the work, no interest in finding common ground,” Obama said in a series of deeply critical comments about the sitting president.

“Donald Trump hasn’t grown into the job because he can’t.”