Is my computer haunted

I am trying to learn about pointers and how to point to an array and how to increment a pointer

when i run this my output is: h,i,j,k,l,m

but i have no h,i,j,k,l,m in my code?!! this does not make sense to me

can anyone explain it?

Code:

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>

main()    {

char* ptr;
int n;


   
char string1 [] = { 'A' , 'B' , 'C' , 'D' , 'E' , 'F', 'G', '\0' } ;

n = 3;

ptr = string1;



while ( *ptr != string1[6] ){

     
printf( "my pointer ptr points at: %c \n", ptr );

ptr++ ;  }



printf("%s",string1);

getchar();

}

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Code:

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printf( "my pointer ptr points at: %c \n", ptr );

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This is saying to print out a character but you pass in a pointer.

Code:

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while ( *ptr != string1[6] ){

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That's probably not what you want, unless the string never contains duplicate characters.

main() should have a return 0.

What's n for? You assign 3 to it, and that's the last and first time it's used.