想不出来的看这

#include <bits/stdc++.h>
using namespace std;
int main(){
	char a;
	cin>>a;
	if(a>='A' and a<='Z'){
		cout<<a-'A'+1;
	}
	else if(a>='a' and a<='z'){
		cout<<a-'a'+1;
	}
	return 0;
}