结构体数组sizeof

代码：

#include "stdafx.h"

struct girl
{
 int age;
 int height; //int weight;
};

int main(int argc, char* argv[])
{
 //printf("Hello World!\n");

 girl girls[100];

 printf("sizeof(int) == %d",sizeof(int)); printf("\n");
 printf("sizeof(girls) == %d ",sizeof(girls)); printf("\n");


 return 0;
}

 

 

输出结果：

sizeof(int) == 4
sizeof(girls) == 800
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结论：对一个结构体对象的数组名求sizeof，结果是整个数组所占的字节数；

 

其实，对char类型的字节数组也是一样的，测试如下：

#include "stdafx.h"

struct girl
{
 int age;
 int height; //int weight;
};

int main(int argc, char* argv[])
{
 //printf("Hello World!\n");

 girl girls[100];

 printf("\n");
 printf("sizeof(int) == %d",sizeof(int));  printf("\n");
 printf("sizeof(girls) == %d ",sizeof(girls)); printf("\n");printf("\n");


 char chs[100];
 printf("sizeof(char) == %d",sizeof(char));  printf("\n");
 printf("sizeof(chs) == %d ",sizeof(chs));  printf("\n");
 return 0;
}

结果：

sizeof(int) == 4
sizeof(girls) == 800

sizeof(char) == 1
sizeof(chs) == 100
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