Thread: Warning: incompatible pointer type

Hey guy , i am new in here and in programming I have a problem and i need help arguently please. I have a code that uses 2D arrays the array is initiallized in the main and then the main calls a function which takes this array as an argument. Whenever i compile i get the following warning (warning: passing argument 1 of ‘Arrange’ from incompatible pointer type)and it won't work any idea how to solve this really appreciate it. thanks in advance warning: passing argument 1 of ‘Arrange’ from incompatible pointer type
the function is defined as follows:

Code:

void Arrange(int array[][20],int i, int j, int array1[20], int k);

and in the main i am calling it that way:

Code:

Arrange(M, 10, 20, M1, 1);

You should really be using pointers in function prototypes ( int **array for 3d, and *array for 2d, make sure to allocate and free properly).

To solve your actual problem, we'd need to see what M and M1 are.

Thanks a lot
M1 and M2 are defined as follows:

Code:

int M[10][10]={
		{1,0,0,01,0,01,01,0,0,0},
		{2,01,0,0,0,0,0,0,0,01},
		{3,-1,011,0,0,-2,0,0,0}};
int M1={6};

I tried your way and tried to use the following

Code:

void Arrange(int *array[20],int i, int j, int array1[20], int k);
int main(void)
{
   int M[10][10]={
        {1,0,0,01,0,01,01,0,0,0},
        {2,01,0,0,0,0,0,0,0,01},
        {3,-1,011,0,0,-2,0,0,0},
        {4,0,3,1,0,0,0,01,01,0},
        {5,-2,0,-3,0,1,0,0,0,-4}};
        int M[]={6};
.......

  Arrange(M, 10, 20, M1, 1);}

but yet i got the same error
any other idea thanks for you coorporation

Code:

void Arrange(int *array[20],int i, int j, int array1[20], int k);
int main(void)
{
   int M[10][10]
.....
Arrange(M, 10, 20, M1, 1);

The array passed must be the same size M is defined as an array of 10 arrays of 10 ints, yet you try to pass an array of array of 20 ints. In your function prototype you should have

Code:

void Arrange(int *array[10],int i, int j, int array1[20], int k);

Jim

Put this:

Code:

printf("M is %p\n",M );
printf("M[10][10] is %d\n",M[10][10]);

Just before you pass it to Arrange(M, 10, 20, M1, 1);
and you will see what you are passing as arguments.

Originally Posted by FloridaJo

Put this:

Code:

printf("M is %p\n",M );
printf("M[10][10] is %d\n",M[10][10]);

Just before you pass it to Arrange(M, 10, 20, M1, 1);
and you will see what you are passing as arguments.

Actually that would be undefined behavior, since M[10][10] is outside the bounds of the array. Plus it would only print one element not the entire array.

Jim

Thanks a lot guys it worked actually Jim you was right I fixed the size and all worked