C - Why does this output "%s" - 


char *x = "world"; x = &x[6];   printf("%s", x);

hi can't understand why above code outputting first argument in printf statement. if change printf("f%s",x); outputs "ff%s" why output ff twice?

thanks

because reading beyond array boundary. array of length 6 (0-5) , you're accessing 6th member (your last available 5th). undefined operation , unpredictable things print out portion of printf statement.


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