foo.cc: In function 'int main()':
foo.cc:10:2: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
  else
  ^~~~
foo.cc:12:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else'
   cout<<setprecision(n+1)<<t<<endl;
   ^~~~

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