C语言函数指针定义

函数指针的定义方法有两种

1.直接定义

int (*func_ptr)(int,int);

int my_function(int x,int y)
{
    return x==y;
}

int main()
{
    int ret = -1;
    func_ptr = &my_function;
    ret = func_ptr(1,2);
    printf(ret = %d\n,ret);

    return 0;
}

二，用typedef定义函数指针

typedef int (*FUNC_PTR_TEST)(int,int);

int my_func2(int a,int b)
{
    return a>b;
}

int main()
{
    int ret = 0;
    FUNC_PTR_TEST func2;
    func2 = my_func2;
    ret = func2(1,2);
    printf("ret = %d\n",ret);
}