标签：turn .com get nbsp set new public asi sizeof
在这里列出了空类，类有函数，值，没有函数的大小，注意Class也是默认字节对齐
#include <stdio.h>
class x
{
};
class cx
{
public:
cx()
{
}
~cx()
{
}
};
class cxHasVal
{
public:
cxHasVal()
{
}
~cxHasVal()
{
}
int a;
char y;
};
class cxHasValFunc
{
public:
cxHasValFunc()
{
}
~cxHasValFunc()
{
}
int a;
char y;
int getASize()
{
return sizeof(a);
}
void setA()
{
a = 5;
}
};
int main()
{
x emptyX;
int emptySize = sizeof(x);
printf("size of empty class is %d\n\n",emptySize);
cx *classx = new cx();
int clsizePt = sizeof(classx);
int clsize = sizeof(cx);
printf("size of class point is %d\n",clsizePt);
printf("size of class is %d\n\n",clsize);
cxHasVal *hasVal = new cxHasVal();
hasVal->a = 12;
int hasValSize = sizeof(hasVal);
int rVal = sizeof(cxHasVal);
printf("size of class Point has val is %d\n",hasValSize);
printf("size of class has val is %d\n\n",rVal);
cxHasValFunc *hasValFunc = new cxHasValFunc();
int hasValFuncSize = sizeof(hasValFunc);
int rValFunc = sizeof(cxHasValFunc);
printf("size of class Point has val is %d\n",hasValFuncSize);
printf("size of class has val Func is %d\n\n",rValFunc);
return 0;
}
运行结果：
标签：turn .com get nbsp set new public asi sizeof
原文地址：https://www.cnblogs.com/anlia/p/9083652.html
