function with dynamic array

[hhhr]

im having trouble making function which takes in two integers, two dynamic arrays and the arrays size.

This is the decleration
int shortest_distance(hnit loc1, hnit loc2, int *p, int *p1, int size);

    int n, dogs;
    cin >> n >> dogs;
    cin >> refur.location.x >> refur.location.y;
hundar = new hnit[dogs];

and this is in the main where im having trouble calling the function
int s_d = shortest_distance(fox.location.x, fox.location.y, hundar, hundar, dogs);

[kzh1456]

int *p,int *p1

but you pass hundar(which is hnit *)

[hhhr]

i dont understand what you mean ?

[kzh1456]

..can you post your codes more detail?

[hhhr]

#include <iostream>
#include <string>
#include <cmath>

using namespace std;
struct hnit
{
int x;
int y;
};


struct fox
{
bool escaped;
bool caught;
hnit location;
};

void print_fox(fox a);
hnit get_location(fox a);
bool on_boundary(hnit xy, int size);
double calculate_distance(hnit loc1, hnit loc2); punkta
//double calculate_distance(int x1, int y1, int x2, int y2);
int shortest_distance(hnit loc1, hnit loc2, int p[], int p1[], int size);

////////////////

int main()
{
fox refur;
hnit *hundar;

int n, dogs;
cin >> n >> dogs;
cin >> refur.location.x >> refur.location.y;

//upphafsstilli bool breyturnar
refur.escaped = false;
refur.caught = false;

hundar = new hnit[dogs];

for (int i = 0; i < dogs; i++)
{
cin >> hundar[i].x >> hundar[i].y;
}

char **p = new char*[n];
for (int i = 0; i < n; i++)
{
p[i] = new char[n];
}

for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
p[i][j] = '.';
}
}

for (int i = 0; i < dogs; i++)
{
p[hundar[i].x][hundar[i].y] = 'D';
}

p[refur.location.x][refur.location.y] = 'F';

for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
cout << p[i][j];
}
cout << endl;
}

hnit tmplocation;
tmplocation.x = 0;
tmplocation.y = 0;

double d = calculate_distance(refur.location, tmplocation);

cout << d << endl;

d = calculate_distance(refur.location, hundar[0]);

cout << d << endl;
//hnit tmp = get_location(refur); //gríp upplýsingar úr fallinu

int s_d = shortest_distance(refur.location.x, refur.location.y, hundar.x, hundar.*y, dogs);
cout << s_d << endl;

delete [] hundar;
return 0;
}


//////////////////////


void print_fox(fox a)
{

}

hnit get_location(fox a)
{
return a.location;
}

bool on_boundary(hnit xy, int size)
{
return false;
}

double calculate_distance(hnit loc1, hnit loc2)
{
double dx = loc1.x - loc2.x;
double dy = loc1.y - loc2.y;
return sqrt(dx * dx + dy * dy);
}

//double calculate_distance(int x1, int y1, int x2, int y2)
//{
// return sqrt( (x1-x2)*(x1-x2) + (y1 - y2)*(y1-y2));
//}

int shortest_distance(hnit loc1, hnit loc2, int p[], int p1[], int size)
{
return size;
}

[mutexe]

hundar.*y

I suggest you read about pointers and functions.

[kzh1456]

hnit *hundar;

[kzh1456]

and what do you want to implement?

[hhhr]

im trying to make function that calculates the shortest distance from the fox to one of the dog

[kzh1456]

you can use stack variables in stead of new.

such as "string a[10];" in stead of "string *p = new string[10]"

which is more simple.

[hhhr]

okay ill try that, thank you