Member Avatar for lochnessmonster

if i were to do this in a program, would it possibly overwrite data/memory that is already being using by my application?

int main()
{
char *pointer = "hi";

pointer = "weeeeeeeeeeeeeeeeeeeeeee";
return 0;
}

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  • Latest Post Latest Post by taylorg
Member Avatar for gerard4143

No your data is safe. When you reassign pointer, its just gets the address of your string "weeeeeeeeeeeeeeeeeeeeeee".

"hi" - has one address value.
"weeeeeeeeeeeeeeeeeeeeeee" - is another address value.

Edited by gerard4143 because: n/a
Member Avatar for alexchen

First use code tags.

int main()
{
char *pointer = "hi";

pointer = "weeeeeeeeeeeeeeeeeeeeeee";
return 0;
}
Edited by alexchen because: n/a
Member Avatar for taylorg

Your data will not be overwritten, as gerard4143 said. If you would like to see for yourself, try this code:

int main()
{
    
    char *pointer = "hi";
    
    char *oldaddr = pointer; /* backup pointer */
    
    printf("%X%s", pointer, "\n\n");
    
    pointer = "weeeeeeeeeeeeeeeeeeeeeee";
    
    printf("%X%s", pointer, "\n\n");
    
    pointer = oldaddr; /* restore old pointer */
    
    printf("%s\n\n", pointer, "\n"); 
    
    return 0;    
}

Good luck with your program!

Edited by taylorg because: n/a
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