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C/C-结构体

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结构体

访问结构体成员

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#include "stdio.h"
#include "string.h"
struct Students{
    char Name[20];
    double ID;
} sd1={"Python",1};
int main()
{
    printf("%sID:%.0lf",sd1.Name,sd1.ID);
    printf("\n");
}
/*输出结果为
 PythonID:1
 */

将结构体传给函数

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	#include "stdio.h"
#include "string.h"
struct Students{
    char Name[20];
    double ID;
} ;
void happy(struct Students sd);
int main()
{
    struct Students sd1;//声明sd1，类型为Studens
    struct Students sd2;
    /*详述sd1*/
    strcpy(sd1.Name, "Pyhton");
    sd1.ID=1;
    /*详述sd2*/
    strcpy(sd2.Name, "C");
    sd2.ID=2;
    /*传递*/
    happy(sd1);
    happy(sd2);
    
    
    
}
void happy(struct Students sd)
{
    printf("(%s)ID:%0.lf",sd.Name,sd.ID);
    printf("\n");
}
/*输出结果：
 (Pyhton)ID:1
 (C)ID:2
 */

指向函数的指针

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#include "stdio.h"
#include "string.h"
struct Students{
    char Name[20];
    double ID;
} ;
void happy(struct Students *sd);
int main()
{
    struct Students sd1;//声明sd1，类型为Studens
    struct Students sd2;
    /*详述sd1*/
    strcpy(sd1.Name, "Pyhton");
    sd1.ID=1;
    /*详述sd2*/
    strcpy(sd2.Name, "C");
    sd2.ID=2;
    /*传递*/
    happy(&sd1);
    happy(&sd2);
    
    
    
}
void happy(struct Students *sd)
{
    printf("(%s)ID:%0.lf",sd->Name,sd->ID);
    printf("\n");
}
/*输出结果：
 (Pyhton)ID:1
 (C)ID:2
 */
//注意和传递结构体给函数的区别