Ahh... 

str is a pointer which doesn't point to any allocated memory. It's point to 
a constant memory which is only READABLE in your program.


main() 
{ 
    char *str ="Algogeeks google"; 
    char *str1 = "GROUP"; 
    printf("str is %s",str); 
    printf("str is %s",str1); 
    int len = strlen(str1) + strlen(str) + 1; // including the null
    char *catstring = new char[len];
    strcat(catstring,str1); 
    strcat(catstring,str); 
    printf("str is %s",catstring); 
    delete[] catstring;
}

On Wednesday, November 14, 2012 7:38:14 PM UTC+5:30, vInOdSpIkY wrote:
>
> hi guys!!
> why this program is giving SEGMENTATION FAULT????
>
> main() 
> { 
>     char *str ="Algogeeks google"; 
>     char *str1 = "GROUP"; 
>     printf("str is %s",str); 
>     printf("str is %s",str1); 
>     strcat(str1,str); 
>     printf("str is %s",str1); 
>      
> }
>
> -- 
> *VINOD KUMAR CHOUDHARY*
> *Bachelor of Technology*
> *Motilal Nehru National Institute of Technology*
> *Allahabad[211004],UP.*
>
>

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