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not able to allocate memory with malloc...

Posted 11-12-2011 at 07:12 AM by mrajdeep

i have the following structures..

typedef struct

{

int cong_x_posx;

int cong_x_posy;

int vc;

}cong_x;



typedef struct

{

int cong_y_posx;

int cong_y_posy;

int vc;

}cong_y;



typedef struct {

int posX;

int posY;

int vc_count;

cong_x *cong_x1;

cong_y *cong_y1;

} grid;


following code works fine.....

grid **grid1;

grid1 = malloc(max_posx * sizeof(grid *));

if(grid1 == NULL)

{

printf("out of memory\n");

}

for(i = 0; i < max_posx; i++)

{

grid1[i] = malloc(max_posy * sizeof(grid));


if(grid1[i] == NULL)

{

printf("out of memory\n");

}

}

while trying to allocating memory to cong_x1 and cong_y1 as follow, it fails...

for(j=cury;j<=desy;j++)

{

printf("\n\n");

for(k=1;k<=curx;k++)

{

printf("\t");

}

for(i=curx;i<=desx;i++)

{

grid1[i][j].cong_x1 = malloc((desx-curx) * sizeof(*grid1[i][j].cong_x1));

grid1[i][j].cong_y1 = malloc((desy-cury) * sizeof(*grid1[i][j].cong_y1));
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