Main.cc: In function 'int main()':
Main.cc:13:7: error: 't' was not declared in this scope
c=a[t-1];
^
Main.cc:14:7: error: 'f' was not declared in this scope
d=a[f-1];
^
Main.cc:15:8: error: 'h' was not declared in this scope
e[i]=h;
^