#include <bits/stdc++.h>
using namespace std;
int main(){
	char a;
	cin>>a;
	cout<<(int)a;
}

谁不会啊

来！随便看，随便抄！

fenghaochen

#include <bits/stdc++.h>
using namespace std;
int main(){
	char a;
	cin>>a;
	cout<<int(a);
  //强制转成int
return 0;
}

999

#include<bits/stdc++.h> using namespace std; int main() { char ch; cin >> ch ; cout << int(ch)<< endl; return 0; }