#include <iostream> #include <cstdlib> using namespace std; int **dynArray(int row, int cols) { int **myPtr; int...
#include <iostream>
#include <cstdlib>
using namespace std;
int **dynArray(int row, int cols)
{
int **myPtr;
int lab[4];
myPtr = new int *[row];
for(int i = 0; i < row; i++)
myPtr[i] = new int[lab[i]];
for(int i = 0; i<row ; i++)
if(myPtr[i] == 0)
cout<<"empty";
return myPtr;
}
void getinput(int ID,int &Station,int &labnumb)
{
cout<<" Enter your ID number: "<<endl;
cin>>ID;
cout<<" Enter your station number: "<<endl;
cin>>Station;
cout<<" Enter your lab number: "<<endl;
cin>>labnumb;
return;
}
void logout(int ID,int &Station,int &labnumb)
{
cout<< "You have been logged out."<<endl;
return;
}
void login(int **dynArray,int ID,int &Station,int &labnumb)
{
dynArray[labnumb][Station] = ID;
return;
}
bool search(int **dynArry,int ID,int &row,int &cols,int lab[])
{
cout<<"Enter user ID to check: "<<endl;
cin>>ID;
bool found = false;
for(int i = 0; i < row;i++)
for(int j = 0; j < lab[i];j++)
if(ID == dynArry[i][j])
{
found = true;
row = i;
cols = j;
}
return found;
}
void Menu(int **dynArray,int ID,int &Station,int &labnumb,int lab[])
{
int choice;
cout<<"Enter 1 for login, 2 for search,3 for exit. "<<endl;
cin>>choice;
if(choice == 1)
login(dynArray,ID,Station,labnumb);
if(choice == 2)
search(dynArray,ID,Station,labnumb,lab);
if(choice == 3)
exit(0);
}
int main()
{
int lab[4];
lab[0] = 5;
lab[1] = 6;
lab[2] = 4;
lab[3] = 3;
int **labmain;
labmain = new int*[4];
for(int i = 0; i <4 ; i++)
{
*(labmain + i) = new int;
}
labmain = dynArray(4,7);
int ID,Station,labnumb;
Menu(dynArray,ID,Station,labnumb,lab);
system("PAUSE");
return 0;
}
I keep getting this error message. In function 'int main()':
78:37: error: cannot convert 'int** (*)(int, int)' to 'int**' for argument '1' to 'void Menu(int**, int, int&, int&, int*)'
Can please tell me how to fix it.
Homework Answers
Answer:
In the code dynArray() is the name of the function. In call to functions Menu(), Search(),login() you are passing dynArray() as input. This caused the error. The input to these functions should be labmain.
Modified Code:
#include <iostream>
#include <cstdlib>
using namespace std;
int **dynArray(int row, int cols,int lab[4])
{
int **myPtr;
myPtr = new int *[row];
for(int i = 0; i < row; i++)
myPtr[i] = new int[lab[i]];
for(int i = 0; i<row ; i++)
if(myPtr[i] == 0)
cout<<"empty";
return myPtr;
}
void getinput(int ID,int &Station,int &labnumb)
{
cout<<" Enter your ID number: "<<endl;
cin>>ID;
cout<<" Enter your station number: "<<endl;
cin>>Station;
cout<<" Enter your lab number: "<<endl;
cin>>labnumb;
return;
}
void logout(int ID,int &Station,int &labnumb)
{
cout<< "You have been logged out."<<endl;
return;
}
void login(int **labmain,int ID,int &Station,int &labnumb)
{
getinput(ID,Station,labnumb);
labmain[labnumb][Station] = ID;
return;
}
bool search(int **labmain,int ID,int &row,int &cols,int lab[4])
{
cout<<"Enter user ID to check: "<<endl;
cin>>ID;
bool found = false;
for(int i = 0; i < row;i++)
for(int j = 0; j < lab[i];j++)
if(ID == labmain[i][j])
{
found = true;
row = i;
cols = j;
}
return found;
}
void Menu(int **labmain,int ID,int &Station,int &labnumb,int lab[4])
{
int choice;
cout<<"Enter 1 for login, 2 for search,3 for exit. "<<endl;
cin>>choice;
if(choice == 1)
login(labmain,ID,Station,labnumb);
if(choice == 2)
search(labmain,ID,Station,labnumb,lab);
if(choice == 3)
exit(0);
}
int main()
{
int lab[4];
lab[0] = 5;
lab[1] = 6;
lab[2] = 4;
lab[3] = 3;
int **labmain;
labmain = dynArray(4,7,lab);
int ID,Station,labnumb;
Menu(labmain,ID,Station,labnumb,lab);
system("PAUSE");
return 0;
}
Add Answer to:
#include <iostream>
#include <cstdlib>
using namespace std;
int **dynArray(int row, int cols)
{
int **myPtr;
int...
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#include <iostream>
using namespace std;
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}
bool checkinventoryprice(float price)
{
return price > 0;
}
void endProgram()
{
system("pause");
exit(0);
}
void errorID(string str)
{
cout << "Invalid Id!!! " << str
<< " should be greater than 0" << endl;
}
void errorPrice(string str)
{
cout << "Invalid Price!!!" << str
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}
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#include <fstream>
#include <cstdlib>
#include <ostream>
#include <fstream>
#include <cstdlib>
#include <cstring>
using namespace std;
typedef struct{
int id;
char title[250];
int year;
char rating[6];
int totalCopies;
int rentedCopies;
}movie;
int loadData(ifstream &infile, movie movies[]);
void printAll(movie movies[], int count);
void printRated(movie movies[], int count);
void printTitled(movie movies[], int count);
void addMovie(movie movies[],int &count);
void returnMovie(movie movies[],int count);
void rentMovie(movie movies[],int count);
void saveToFile(movie movies[], int count, char *filename);
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#include <queue>
using namespace std;
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public:
Graph(int n);
~Graph();
void addEdge(int src, int tar);
void BFTraversal();
void DFTraversal();
void printVertices();
void printEdges();
private:
int vertexCount;
int edgeCount;
bool** adjMat;
void BFS(int n, bool marked[]);
void DFS(int n, bool marked[]);
};
Graph::Graph(int n=0) {
vertexCount = n;
edgeCount = 0;
if(n == 0)
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#include <iostream>
using namespace std;
bool checkinventoryid(int id)
{
return id > 0;
}
bool checkinventoryprice(float price)
{
return price > 0;
}
void endProgram()
{
system("pause");
exit(0);
}
void errorID(string str)
{
cout << "Invalid Id!!! " << str
<< " should be greater than 0" << endl;
}
void errorPrice(string str)
{
cout << "Invalid Price!!!" << str
<< " should be greater than 0" << endl;
}
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#include <iostream>
#include <fstream>
#include <cstdlib>
#include <ostream>
#include <fstream>
#include <cstdlib>
#include <cstring>
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typedef struct{
int id;
char title[250];
int year;
char rating[6];
int totalCopies;
int rentedCopies;
}movie;
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void printAll(movie movies[], int count);
void printRated(movie movies[], int count);
void printTitled(movie movies[], int count);
void addMovie(movie movies[],int &count);
void returnMovie(movie movies[],int count);
void rentMovie(movie movies[],int count);
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void BFTraversal();
void DFTraversal();
void printVertices();
void printEdges();
private:
int vertexCount;
int edgeCount;
bool** adjMat;
void BFS(int n, bool marked[]);
void DFS(int n, bool marked[]);
};
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