foo.cc: In function 'int main()':
foo.cc:30:17: error: 's' was not declared in this scope
         cout<<a[s]<<a[c]<<a[m]<<a[e];
                 ^
foo.cc:30:23: error: 'c' was not declared in this scope
         cout<<a[s]<<a[c]<<a[m]<<a[e];
                       ^
foo.cc:30:29: error: 'm' was not declared in this scope
         cout<<a[s]<<a[c]<<a[m]<<a[e];
                             ^
foo.cc:30:35: error: 'e' was not declared in this scope
         cout<<a[s]<<a[c]<<a[m]<<a[e];
                                   ^

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