Why this program is not working?

#include<>
using namespace std;

int main()

{
char ch;

cout<<"Enter any letter: ";
cin>>"ch";

if(ch=='a' || ch=='e' || ch=='i' || ch=='o' || ch=='u'|| ch=='A' || ch=='E' || ch=='I' || ch=='O' || ch=='U')
cout<<"Vowel";
else
cout<<"Consonant";

return 0;
}

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