c++-關於C++結構體的問題(新手)

關於C++結構體的問題(新手)

結構體清零有什麼函數可以用麼？還有用引用來調用。。如題

最佳回答：

 #include <stdlib.h>
#include <stdio.h>

typedef struct {
    char name[20];
    int math;
    int eng;
    int db;
} Student;

void SetZero(Student& s)
{
    s.math = 0;
    s.eng = 0;
    s.db = 0;
}

Student* SetZero1(Student s)
{
    Student *p = (Student *)malloc(sizeof(Student));
    memcpy(p, &s, sizeof(Student));
    p->math = 0;
    p->eng = 0;
    p->db = 0;
    return p;
}

int main()
{
    Student s;
    s.math = 100;
    printf("%d\n", s.math);
    SetZero(s);
    printf("%d\n", s.math);
    s.math = 100;
    printf("%d\n", s.math);
    s = *SetZero1(s);
    printf("%d\n", s.math);
    return 0;
}

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