/C/What happens if i acess a freed variable in c

What happens if i acess a freed variable in c

#include <cs50.h>
#include <stdio.h>

int main(void)
{
  {
    int* px = malloc(sizeof(int));
    *px = 3;
    printf("&px = %i, px = %p\n", *px, px);


    free(px);

    if( px == NULL)
        printf("px is null after free\n");
    else
        printf(" px = %p\n",px);
   }
//     this printf would demonstrate that px is out of scope.
//            printf(" px = %p\n",px);
}

Source: cs50.stackexchange.com

Similar codes

0 vote269 views1 answer
Deleting a word with copy fuction c code
C
0 vote248 views2 answers
Lcm of two numbers
C
1 vote229 views1 answer
C detect a change of line in a file
C
0 vote249 views1 answer
Gemfile.lock`. It is likely that you need to grant write permissions for that path.
C
1 vote219 views1 answer
Create cron task
C
0 vote293 views1 answer
Actionbar content color in android
C
-1 vote237 views4 answers
Convert c++ to c online
C
-1 vote241 views1 answer
Queryfailederror: invalid input syntax for type uuid:
C
0 vote273 views2 answers
Profile time bash script
C
39 votes314 views5 answers
Fahrenheit to celsius formula
C