这些是错误: a3.c:Infunction‘main’:a3.c:24:5:error:expected declaration specifiersor‘...’before‘score’a3.c:25:5:error:expected declaration specifiersor‘...’before‘srand’a3.c:27:5:error:expected declaration specifiersor‘...’before‘printf’a3.c:28:5:error:expected declaration spec...