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结构体的应用与理解.戴维营第九天

2024-07-24 06:12:01   209人阅读

学了结构体,通过从最简单结构体输入到结构体数组,结构体指针,结构体作为函数参数,包含结构的结构,每种都进行敲代码来理解和体会,另外还学到了栈,先进后出,后进先出,堆需要自己分配,同时一定要有个明确的指针,否则自己都会找到不到,程序中的malloc, calloc, realloc等函数都是分配内存. 由小的空间向大的空间分配, 堆是从下向上分配.至于链表还在练习中

#include <stdio.h>#include<string.h>struct Student              /*学生结构*/{    char cName[20];             //姓名    int iNumber;                //学好    char cSex;                  //性别    int iGrade;                 //年纪}student;int main(){    struct Student*pStruct;                                    //定义结构体指针    pStruct=&student;                                           //指针指向结构体变量    strcpy(pStruct->cName,"SuYuQuan");  //将字符串常亮复制到成员变量中    pStruct->iNumber=12061212;              //为成员变量赋值    pStruct->cSex=‘W‘;    pStruct->iGrade=2;                printf("----the student‘s information----\n");          //消息提示    printf("Name:%s\n",student.cName);                      //使用变量直接输出    printf("Number:%d\n",student.iNumber);    printf("Sex:%c\n",student.cSex);    printf("Grade:%d\n",student.iGrade);    return 0;    }

 

struct Student{    char cName[20];    int iNumber;    char cSex;    int iGrade;}student[5]={{"wangjiasheng",12062212,‘M‘,3},    {"yulongjiao",12062213,‘W‘,3},    {"zhangmeng",12062214,‘W‘,3},    {"jiangxuehuan",12062215,‘w‘,3},    {"hanliang",12062216,‘M‘,3}};int main(){    struct Student*pStruct;    int index;    pStruct=student;    for (index=0; index<5; index++,pStruct++)    {        printf("NO%d student:\n",index+1);        printf("Name:%s,Number:%d\n",(*pStruct).cName,pStruct->iNumber);        printf("Sex:%c,Grade:%d\n",pStruct->cSex,pStruct->iGrade);        printf("\n");    }        return  0;}

 

struct Student{    char cName[20];    float fScore[3];}student={"suyuqun",98.5f,89.0,93.5f};void Display(struct Student* stu){    printf("------unformation------\n");    printf("Name:%s\n",stu->cName);        printf("English:%.2f\n",stu->fScore[2]);    stu->fScore[2]=90.0f;}int main(){    struct Student* pStruct=&student;    Display(pStruct);    printf("change english:%.2f\n",pStruct->fScore[2]);    return 0;}

 

struct date{    int year;    int month;    int day;};struct student{    char name[30];    int num;    char sex;    struct date birthday;}student={"WangWei",12345678.,‘M‘,{1986,12,6}};int main(){    printf("-------information---------\n");    printf("Name:%s\n",student.name);    printf("Number:%d\n",student.num);    printf("Sex:%c\n",student.sex);    printf("Brithday:%d,%d,%d\n",student.birthday.year,           student.birthday.month,           student.birthday.day);    return 0;}

 

结构体的应用与理解.戴维营第九天


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