Main.cc: In function 'int main()': Main.cc:30:9: error: expected '}' before 'else' else ^ Main.cc:23:9: warning: unused variable 'c' [-Wunused-variable] int m,n,c=0,f=0; ^ Main.cc: At global scope: Main.cc:35:1: error: expected unqualified-id before 'if' if(f==0){ ^ Main.cc:38:5: error: expected unqualified-id before 'return' return 0; ^ Main.cc:39:1: error: expected declaration before '}' token } ^