学习了一下c++的内存管理情况

void printMemByByte(int * ptr,int len);

void print32BitsByByte(int *i);

int main() {

int b=0xABCD;

cout<<"int value b:"<<endl;

printMemByByte(&b,1);

char s[] = "abc"; cout<<"array s:"<<endl;

printMemByByte((int *)s,1);

char * p3 = "123456";

cout<<"pointer p3:"<<endl;

printMemByByte((int *)p3,(int)((float)7/4+0.5));

p1 = (char * ) malloc(10);

strcpy(p1, "123456");

*(p1+10)=(char)257;//same to arrange it 1 as -256+257

*(p1+11)=(char)3;//越界不会产生编译错误，只会在运行时发生逻辑错

cout<<"pointer p1:"<<endl;

printMemByByte((int *)p1,(int)((float)10/4+0.5));

char c1 ;

cin>>c1;

return 0;

}

void print32BitsByByte(int *i){

__int8 * pByte=(__int8 *)i;

//cout<<"Addr of i :"<<hex<<(void *)pByte<<endl;

cout<<hex<<(__int8 *)pByte<<" ";

while(pByte<((__int8 *)i+sizeof(int))){

cout<<hex<<(((__int8)(*((__int8 *)pByte++)))&0xFF)<<" ";

}

cout<<endl;

}

void printMemByByte(int *ptr,int len){

int i=0;

for(;i<len;i++){

print32BitsByByte((int *)ptr++);

}

}