Thread: use of realloc

I can't understand how realloc works.I make this code
#include <stdio.h>
#include <stdlib.h>

Code:

int main(void)
{
  int *p=(int *)malloc(5*sizeof(int));
  int i;

 for(i=0; i<5; i++)
   scanf("%d",&p[i]);
 for(i=0; i<2; i++)
   printf("%d", p[i]);
 printf("new elements");

 p=(int *)realloc(p,10*sizeof(int));


 for(i=5; i<10; i++);
 scanf("%d", &p[i]);



 return 0;
}

first it asks memory for 5 int.After i put 5 numbers and i print the first 2 numbers.Then use realloc in order to put 5 more numbers but when i give the first number and then enter the programm finishes?Why?I think that should ask me for 5 numbers and not for one.

Code:

for(i=5; i<10; i++);

should be

Code:

 for(i=5; i<10; i++)

And always check the return value of the malloc and realloc. And dont type cast the malloc and realloc function. See FAQ

ssharish

thank you very much, i know that i must check the return value