qfedu-cpp-level/day2/d6_2.cpp

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// 指针的引用
// 为指针取个别名,相当于'指针的指针'
#include <iostream>
#include <cstdlib>
using namespace std;
struct STU
{
int sid;
float score;
};
// 指针的指针
void set_score(STU **q, int sid, float score)
{
(*q)->sid = sid;
(*q)->score = score;
}
int main()
{
STU *p = (STU *)malloc(sizeof(STU));
set_score(&p, 2, 98);
cout << "sid = " << p->sid << ", score = " << p->score << endl;
return 0;
}