我创建了一个返回指向字符串数组的指针的函数。该函数应该遍历一个链表,并且应该将每个节点的数据分配到一个字符串数组中。这是我的功能:
//function to traverse every node in the list
string *DynStrStk::nodeStrings(int count)
{
StackNode *nodePtr = nullptr;
StackNode *nextNode = nullptr;
int i = 0;
//Position nodePtr at the top of the stack
nodePtr = top;
string *arr = new string[count];
//Traverse the list and delete each node
while(nodePtr != nullptr && i < count)
{
nextNode = nodePtr->next;
arr[i] = nodePtr->newString;
nodePtr = nextNode;
cout << "test1: " << arr[i] << endl;
}
return arr;
}
我想使用指向上面函数返回的数组的指针,并且我想将它分配给不同函数中的新数组,它将测试该数组中的每个下标的条件。
我无法访问新数组,我什至无法打印出每个新数组元素中的字符串。
arr = stringStk.nodeStrings(count);
cout << "pointer to arr of str: " << *arr << endl;
for(int i = 0; i < count; i++)
{
cout << "test2: " << arr[i] << endl;
}
这是我调用两个函数后的输出:
test1: rotor
test1: rotator
test1: racecar
test1: racecar
pointer to arr of str: racecar //this test tells me i can get to array
test2: racecar
test2:
test2:
test2:
这是我的预期输出
test1: rotor
test1: rotator
test1: racecar
test1: racecar
pointer to arr of str: racecar
test2: racecar
test2: racecar
test2: rotator
test2: rotor
我在做什么错,如何从第二个函数访问新数组中的每个元素??????
谢谢!!!!
这是使用指向数组的指针的第二个函数:
int createStack(fstream &normFile, ostream &outFile)
{
string catchNewString;
string testString, revString;
string *arr;
int count = 0; //counts the number of items in the stack
DynStrStk stringStk;
while(getline(normFile,catchNewString)) // read and push to stack
{
stringStk.push(catchNewString); // push to stack
//tracer rounds
outFile << catchNewString << endl;
count++;
}
arr = stringStk.nodeStrings(count);
cout << "pointer to arr of str: " << *arr << endl;
for(int i = 0; i < count; i++)
{
cout << "test2: " << (arr[i]) << endl;
}
return count;
}