c - Dereferencing pointers -

i came along question , when compiled , run in codeblockes got error , not run it.

here question.

what output of program ?

#include<stdio.h>  #include<string.h> int main(){    int i, n;    char *x="alice";    n = strlen(x);    *x = x[n];    for(i=0; i<=n; i++){       printf("%s ", x);       x++;    }    printf("\n", x);    return 0; } 

a. alice

b. ecila

c. alice lice ice ce e

d. lice ice ce e

that code looks wrong. line

*x = x[n]; 

tries write string literal "alice". string literals cannot modified results in undefined behaviour. crash (as think you're seeing) valid , expected result here.

to answer question, output program undefined. unlikely give of results suggest.

if change declaration of x

char s[]="alice"; char* x = s; 

then

*x = x[n]; 

will replace first character of x null terminator, meaning printf loop output lice ice ce e (option d choices)