hash.cs fix

┌[gift@hercales] [/dev/pts/15] [master] [1]
└[~/code/cs/jason-code-fork]>   mcs hash.cs 
┌[gift@hercales] [/dev/pts/15] [master ⚡] [2]
└[~/code/cs/jason-code-fork]>   mono hash.exe
Name: 
foo    
Age: 
82
Name: 
bar
Age: 
17
Name: 
baz
Age: 
34 
bar is 17 years old
baz is 34 years old
foo is 82 years old