char a;
int b;
double c;
scanf("%c %d %lf",&a,&b,&c);
这样就行
#include <iostream>
using namespace std;
int main()
{
char c;
int i;
double d;
cin >> c;
cin >> i;
cin >> d;
cout << char(c -32) << " ";
cout << 0-i << " ";
cout << round(d*10)/10;
}