Unallocated Memory Reference
Revision as of 13:39, 8 December 2013 by Arjun Suresh (talk | contribs)

<syntaxhighlight lang="c">

  1. include<stdio.h>

int main() { 

int *a;
*a=5;
printf("%d",a);

return 0;

}

</syntaxhighlight>

Solution

int *a; // This declares a as an integer pointer, meaning a can point to a memory address which contains an int

  • a = 5; //Makes the content of the address pointed to by a 5. But a is not pointing to any valid address (int *a assigns garbage value to a) and hence this assignment can cause segmentation fault


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<syntaxhighlight lang="c">

  1. include<stdio.h>

int main() { 

int *a;
*a=5;
printf("%d",a);

return 0;

}

</syntaxhighlight>

Solution[edit]

int *a; // This declares a as an integer pointer, meaning a can point to a memory address which contains an int

  • a = 5; //Makes the content of the address pointed to by a 5. But a is not pointing to any valid address (int *a assigns garbage value to a) and hence this assignment can cause segmentation fault


blog comments powered by Disqus