#include <iostream> using namespace std; _______________________ void One(float one) { cout<<"1"<<endl; } void Two(float two) { cout<<"2"<<endl; } void Three(float three) { cout<<"3"<<endl; } int main() { float i=1,j=2,k=3; function = One; function(i); function= Two; function(j); function = Three; function(k); }请为横线处选择合适的程序使得程序的运行结果是123 ( )