Segmentation fault

[steffen]

Hey,
So I try to write a small thing that initializes a class which contains an array and then outputs it. However, it gives a segmentation fault on line 13. Can someone help me solve this?
Thanks for the help!!
Steffen

=================================
#include <iostream>
using namespace std;

class Array {
int number;
int *array;
public:
Array() {
number=0;
array=0;
}
void init(int amount=0) {
number=amount;
array=new int[number];
for(int i=0;i<number;i++) {
array[i]=i;
}
return;
}
void output() {
for(int i=0;i<number;i++) {
cout << array[i]<<" ";
}
cout<<endl;
return;
}
};

int main () {
//initialize
Array *a;
a->init(10);
cout<<"Output after initialization: "<<endl;
a->output();
}
=================================

[kevinchkin]

The only problem is that you did not created an object of class Array before calling a->init(10);.

Here is the updated code:

#include <iostream>
using namespace std;

class Array {
int number;
int *array;
public:
Array() {
number=0;
array=0;
}
void init(int amount=0) {
number=amount;
array=new int[number];
for(int i=0;i<number;i++) {
array[i]=i;
}
return;
}
void output() {
for(int i=0;i<number;i++) {
cout << array[i]<<" ";
}
cout<<endl;
return;
}
};

int main () {
//initialize
Array *a = new Array();
a->init(10);
cout<<"Output after initialization: "<<endl;
a->output();
delete a;
return 0
}

Hope this helps !

[steffen]

Hey,
yeah, that helped. I feel so stupid. Thanks so much for pointing my nose to the obvious.
Steffen