Main.cc: In function 'int main()': Main.cc:4:32: warning: variable 'z' set but not used [-Wunused-but-set-variable] int a[1001]={},n,t,m=0,b=0,z=1001; ^ Main.cc: At global scope: Main.cc:18:5: error: 'cout' does not name a type cout<z<<endl; ^ Main.cc:19:5: error: expected unqualified-id before 'return' return 0; ^ Main.cc:20:1: error: expected declaration before '}' token } ^