CS3376 Strings

The null terminator stands for this ASCII code.

0

After the following statement executes, what value is stored in the variable num? num = atoi("1000");

1000

The C-string company[12] can hold

11 characters and the null terminator

To use the strlen function in a program, you must also write #include ___

<cstring>

This is the escape sequence representing the null terminator.

\0

The expression being tested by if (!isdigit(var1)) will evaluate to true if var1 is:

an alphabetic character or a symbol such as & or $

This function accepts a C-string containing a number as its argument and returns the integer equivalent.

atoi

This function converts a C-string to an integer and returns the integer value.

atoi

This statement converts the string "10" to the integer value 10.

atoi("10")

This function accepts a C-string as an argument and converts the string to a long integer.

atol

Which of the following lines of code defines an array of C-strings that will hold 49 characters and the null terminator?

char str[50];

To determine whether a character entered is a letter of the alphabet, use this function.

isalpha

To test whether a character is a numeric digit character, use this function.

isdigit

To test whether a character is a printable character, use this function.

isprint

What is the output of cout << tolower(toupper('Z')) << endl; ?

lowercase Z

This library function reverses the order of a C-string.

none of the above

This function concatenates the contents of one C-string with another C-string.

strcat

This function accepts a pointer to a C-string as an argument, and it returns the length of the C-string (not including the null terminator).

strlen

This function accepts pointers to two C-strings and an integer argument, which indicates how many characters to copy from the second C-string to the first.

strncpy

A library function that can find one C- string inside another is:

strstr

"Whitespace" encompasses which of the following?

tab, newline, space

In C++, a C-string is a sequence of characters stored in consecutive memory, terminated by

the null character

To change a character argument from lower to upper case, use this function.

toupper

To change a lower case character to an upper case character, use this function.

toupper

A practical application of this function is to allow a user to enter a response of 'y' or 'Y' to a prompt.

toupper or tolower

The strcpy function's arguments are:

two addresses

The statement char var1 = tolower('A'); will result in:

var1 storing the ASCII value for lower case 'a'.