Main.cc: In function 'int main()':
Main.cc:11:5: error: 'else' without a previous 'if'
else if('a'<=c&&<='Z');
^
Main.cc:11:21: error: expected primary-expression before '<=' token
else if('a'<=c&&<='Z');
^
Main.cc:13:5: error: 'else' without a previous 'if'
else if('0'<=c && c <='9');
^
Main.cc:16:5: error: 'else' without a previous 'if'
else
^