Question

Question 8 A C-string is a sequence of characters terminated by the null character. True False D Question 9 What is the longest C-string that can be put into this C-string variable? char s[9]; There is not enough information to determine the 8th

Answer 1

answer 8:

TRUE: A string is a simple array with char as a data type. 'C' language does not directly support string as a data type. Hence, to display a string in 'C', you need to make use of a character array.The general syntax for declaring a variable as a string is as follows,char string_variable_name [array_size]; The classic string declaration can be done as follow: char string_name[string_length] = "string"; The size of an array must be defined while declaring a string variable because it used to calculate how many characters are going to be stored inside the string variable. Some valid examples of string declaration are as follows,

char first_name[15]; //declaration of a string variable char last_name[15]; 

The above example represents string variables with an array size of 15. This means that the given character array is capable of holding 15 characters at most. The indexing of array begins from 0 hence it will store characters from a 0-14 position. The C compiler automatically adds a NULL character '\0' to the character array created.

answer 9: option c;

s[9] can contain atmost 9 characters,this example represents string variables with an array size of 9. This means that the given character array is capable of holding 9 characters at most. The indexing of array begins from 0 hence it will store characters from a 0-8 position. The C compiler automatically adds a NULL character '\0' to the character array created.

answer 10: false as the string is terminated by the null character ,

answer 11:

cin.putback(ch)

The putback() function lets us put the last character extracted from the input stream by the get() function back into the input stream. We will be using both functions with the input stream object cin,hence putback() function is the answer of this question