c语言 malloc小案例1

#include<stdio.h>

#include<malloc.h>

struct  Student * CreateStudent();

ShowStudentInfo(struct Student * stu);

struct Student{

  int sid;

  int age;

};

main(void){

  struct Student * xiaoMing =  CreateStudent();

  ShowStudentInfo(xiaoMing);

}

 struct  Student * CreateStudent(){

     struct Student * stu = (struct Student *) malloc(sizeof(struct Student) );

     stu->age = 100;

     stu->sid = 01;

     return stu;

 }

 ShowStudentInfo(struct Student * stu){

    printf("sid = %d,age = %d",stu->sid,stu->age);

  }