Question

can any1 help me regarding "passing multidimensional arrays"?

Answer 1

i have a dynamic array and i have to fill it with random values.............
so i have to do smthin like

randomAssign(&array,size)
void randomAssign(int ***array,int size)
{
int i,j;
for(i=1...size)
for(j=1...size)
array[i][j]=rand();

return;
}


but this gives a segmentation fault?
so wer did i go wrong?

Answer 2

@nick67
@slotema

Answer 3

array is of type
int **


int **array;
array = builder(size);
and my builder function is here


int ** builder(int n)
{
int i;
int *array=malloc(n*sizeof(int));
for(i=0;i<n;i++)
array[i]=(int *)malloc(n*sizeof(int));
return array;
}


language s c

Answer 4

@ktobah

Answer 5

You know when you want to pass an Array as argument, don't use &, because C/C++ consider arrays as addresses. Try this .

Answer 6

nope tried that.............it dint work

Answer 7

any ideas?

Answer 8

I really don't have any idea, sorry.

Answer 9

tsk thanks nyway.......

Answer 10

You're welcome.

Answer 11

@A.Avinash_Goutham
try something like this (with this example you have a 10x10 array with random values up to 99:

#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;
#define ARRAY_SIZE 10

void randomAssign(int *array_ptr,int size)
{
int i,j;
srand ( time(NULL) );
for(i=0;i<size;i++)
for(j=0;j<size;j++)
{
*array_ptr = rand() % 100;
array_ptr++;
}
return;
}

int main()
{
int array[ARRAY_SIZE][ARRAY_SIZE];
randomAssign(&array[0][0], ARRAY_SIZE);
return 0;
}

Answer 12

Sir, the array should be dynamic...........i shud be able to give the size at the run time.....

Answer 13

main()
{
int n,i,j;
printf("enter the size of the maze:");
scanf("%d",&n);
static int **array;
array=builder(n);
if(array)
{
printf("array creation succesfull\n");
}
printf("%d\n",rand());
assign(array,n);
randomAssign(array,n);
print(array,n);
}

int ** builder(int n)
{
int i;
int *array=malloc(n*sizeof(int));
for(i=0;i<n;i++)
array[i]=(int *)malloc(n*sizeof(int));
return array;
}


void print(int **array,int n)
{
int i,j;
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
printf("%d ",array[i,j]);
printf("\n");
}
return;
}

void assign(int **array,int n)
{
int i,j;
for(i=0;i<n;i++)
for(j=0;j<n;j++)
{
printf("enter element array[%d][%d]:",i,j);
scanf("%d",&array[i][j]);
}
return;
}

void randomAssign(int **array,int n)
{
int i,j;
for(i=0;i<n;i++)
for(j=0;j<n;j++)
array[i][j]=rand()%2;
return;
}

Answer 14

that was my code..