Main.cc: In function ‘int main()’: Main.cc:9:26: error: expected primary-expression before ‘int’ float a = quzuigao + int - fen; ^~~ Main.cc:7:11: warning: unused variable ‘quzuidi’ [-Wunused-variable] float quzuidi = 9.8 * 5; ^~~~~~~ Main.cc:8:11: warning: unused variable ‘fen’ [-Wunused-variable] float fen = 9.6 * 6; ^~~