#include
//void change(int value);
struct Person
{
int age;
char *name;
};
//void change(struct Person value);
void change(struct Person *p);
int main(int argc,const char * argv[]){
/*
struct Person sp = {30,"lnj"};
// 1.将结构体的属性传递给函数,在函数中修改形参不会影响到实参
printf("age = %i\n",sp.age);
//change(sp.age);
// 2.将结构体名称作为参数传递,在函数中修改形参不会影响到实参
//结构体之间赋值是值传递,系统会将A结构体的值拷贝一份到B结构体中
change(sp);
printf("age = %i\n",sp.age);
*/
/*
struct Person sp1 = {30,"lnj"};
struct Person sp2 = sp1;//结构体之间赋值是值传递,相当于拷贝
printf("sp1.age = %i\n",sp1.age);
sp2.age = 998;
printf("sp1.age = %i\n",sp1.age);
printf("sp2.age = %i\n",sp2.age);
*/
struct Person sp1 = {30,"lnj"};
printf("sp1.age = %i\n",sp1.age);
change(&sp1);
printf("sp1.age = %i\n",sp1.age);
return 0;
}
//void change(int value)
//void change(struct Person value)
void change(struct Person *p)
{
//value = 99;
//value.age = 100;
p->age = 998;
}
