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#2
自由而无用2021-10-11 09:31
//online parser: https://www.bccn.net/run/
 程序代码：#include <stdio.h> #include <stdlib.h> #include <string.h> typedef struct { char a; int b; float c; }struct_A_s; typedef struct { char a; int b; struct_A_s obj; float c; }struct_B_s; struct_B_s sObj = { 10, 1000, .obj.a = 10, .obj.b = 1000, .obj.c = 0.1, 9.99 }; int main(int argc, char *argv[]) { struct_B_s *p = &sObj; printf("a = %d\n", p->a); printf("a = %d\n", p->b); printf("obj-a[mem] = %d, obj-a[ptr] = %d\n", p->obj.a, (&p->obj)->a); printf("obj-b[mem] = %d, obj-b[ptr] = %d\n", p->obj.b, (&p->obj)->b); printf("obj-c[mem] = %.2lf, obj-c[ptr] = %.2lf\n", p->obj.c, (&p->obj)->c); return 0; } output sample: a = 10 a = 1000 obj-a[mem] = 10, obj-a[ptr] = 10 obj-b[mem] = 1000, obj-b[ptr] = 1000 obj-c[mem] = 0.10, obj-c[ptr] = 0.10 |
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
typedef struct
{
char a;
int b;
float c;
}struct_A_s;
typedef struct
{
char a;
int b;
struct_A_s obj;
float c;
}struct_B_s;
struct_B_s sObj =
{
10,
1000,
.obj.a = 10,
.obj.b = 1000,
.obj.c = 0.1,
9.99
};
int main()
{
struct_B_s *p = &sObj;
printf("a=%d\n",p->a);
printf("a=%d\n",p->b);
printf("obj-a=%d\n",p->obj->a);//可不可这样子访问
printf("obj-b=%d\n",p->obj->b);//可不可这样子访问
printf("obj-c=%.2lf\n",p->obj->c);//可不可这样子访问
return 0;
}
