Discussion
String operation such as strcat(s, t), strcmp(s, t), strcpy(s, t) and strlen(s) rely heavily upon
Answer: A
Correct answer: Presence of NULL character
Every one of them finds the end of a string by looking for the terminating null - there is no stored length. A string that has lost its null makes all of them read past the end of the array, which is the single commonest cause of memory corruption in C.
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