c语言(只知道子函数地址，调用子函数)

#include
int max(int i,int j)
{
    return ((i>j)?i:j);
} 
typedef int(*fp)(int,int);
int main(void)
{
    unsigned int addr = (unsigned int)(&max);
    printf("%x\n",addr);
    // int (*k)(int,int);
    //  fp k = (int(*)(int,int))addr;
    fp k = (fp)addr;
    int m = k(1,2);
    printf("%d\n",m);
    return 0;
}

#include
int max(int i,int j)
{
    return ((i>j)?i:j);
} 
//typedef int (*fp)(int,int);


int main(void)
{
unsigned int addr = (unsigned int)(&max);
printf("%x\n",addr);
int (*k)(int,int);
k = (int(*)(int,int))addr;
int m = k(1,2);
printf("%d\n",m);
return 0;
}