class name {
char *s;
int len;
public:
name(){ // Default constr.
s=NULL;
len =0;
}
//**************************************************
~name(){ // Destruct.
if (s!=NULL){
delete [] s;
s=NULL;
}
}
//*************************************************
name(const char * s1); // Constr.
char* getName(); //fcn get name
int getLen() ; // fcn get lenght
void setName(const char * s1); // fcn set name
};
void name::setName(const char * s1){
if (s!=NULL){
delete [] s;
s=NULL;
}
len = strlen(s1)+1;
s=new char [len]; // back***
strcpy(s,s1);
}
name::name(const char * s1){
if (s!=NULL){
delete [] s;
s=NULL;
}
len = strlen(s1)+1;
s=new char [len]; // back***
strcpy(s,s1);
}
char* name::getName(){
return s ;
}
int name::getLen(){
return strlen(s)+1 ;
}
int main()
{
char C[20];
cout << "Please enter a name: ";
cin >> C;
name AAA(C);
name BBB;
BBB.setName(C);
cout << "\nThe length of A(" << AAA.getName();
cout << ") is: \a" << AAA.getLen() << endl << endl;
cout << "\nThe length of B(" << BBB.getName();
cout << ") is: \a" << BBB.getLen() << endl << endl;
system("pause");
return 0;
}
当我运行代码时,“BBB”类成功执行,但“AAA”给我运行时错误!
错误 :
test0.exe 中 0x651157aa (msvcr100d.dll) 处的未处理异常:0xC0000005:访问冲突读取位置 0xccccccc0。