boost封装了函数指针,函数指针使用起来更加简便:

#include <iostream>
#include "boost/function.hpp"

double add(double a, double b)
{
        std::cout<<a+b<<std::endl;
        return (a + b); 
}
double del(double a, double b)
{
        std::cout<<(a - b)<<std::endl;
        return (a - b); 
}
int main()
{
        boost::function<double (double, double)> func[2]={add, del};
        (*func)(1,0);
        (* (func+1))(4,2);
        return 0;

}

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原文链接:https://blog.csdn.net/BloodRose1991/article/details/52245135