Main.cc: In function 'int main()':
Main.cc:10:8: error: 'a' was not declared in this scope
cin>>a[i];
^
Main.cc:16:7: error: 'a' was not declared in this scope
if (a[i] < minx){
^
Main.cc:23:7: error: 'a' was not declared in this scope
if (a[i] != minx && a[i] < secx){
^