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  1.     #include <stdio.h>
  2.     #include <stdlib.h>
  3.  
  4.     typedef struct {
  5.     	int x, y;
  6.     } Point;
  7.  
  8.     void resize(Point** xyp) {
  9.     	int n;
  10.         *xyp=(Point*)realloc(*xyp, 4*sizeof(Point));
  11.  
  12.         for (n=0;n<4;n++)
  13.         {
  14.             (*xyp)[n].x=n;
  15.             (*xyp)[n].y=n;
  16.         }   
  17.     }
  18.  
  19. 	int main () {
  20. 		int n;
  21. 	    Point *xy;
  22. 	    xy=(Point*)malloc(2*sizeof(Point));
  23.  
  24. 		for (n=0;n<2;n++)
  25. 		{
  26. 			xy[n].x=n;
  27. 			xy[n].y=n;
  28. 		}       
  29.  
  30. 	   resize(&xy) ; 
  31.  
  32. 	   for (n = 0; n<4; n++) {
  33. 		    printf("xy[%i].x= %i \n",n,xy[n].x);
  34. 			printf("xy[%i].y= %i \n",n,xy[n].y);
  35. 	   }       
  36.  
  37. 	   free(xy);
  38.  
  39. 	   return 0;
  40. 	}
Success #stdin #stdout 0s 2244KB
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stdin
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Standard input is empty
stdout
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xy[0].x= 0 
xy[0].y= 0 
xy[1].x= 1 
xy[1].y= 1 
xy[2].x= 2 
xy[2].y= 2 
xy[3].x= 3 
xy[3].y= 3
https://ideone.com/gIntgl
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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