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已知变量定义如下：int num = 10; char ch = 'A'; double pi = 3.14;
int num = 10; char ch = 'A'; double pi = 3.14;
printf("%d %c %lf", num, ch, pi);
cout << num << " " << ch << " " << pi << endl;
scanf("%d %c %lf", &num, &ch, &pi);
cout << num << ' ' << ch << ' ' << fixed << pi << endl;