Strings in C and Error Detection Worksheet

A string in C is terminated by which character?

• \t

• \n

• \0

• EOF

Which of the following correctly declares a string?

• char str[10];

• char str;

• string str[10];

• char str[] = {'H','i'};

What is the output of the following code? char s[] = "Hello"; printf("%d", sizeof(s));

• 4

• 5

• 6

• Depends on compiler

Which header file is required for string functions in c?

Which statement is TRUE about strings in C?

• Strings are primitive data types

• Strings are arrays of characters

• Strings cannot contain spaces

• Strings end with \n

What does strlen() return?

• Number of characters including \0

• Number of characters excluding \0

• Size of string in bytes

• Always one less than array size

Which function is used to copy one string into another?

• stradd()

• strcpy()

• strcat()

• strcmp()

What is the output? printf("%d", strcmp("abc", "abc"));

• -1

• 1

• 0

• Undefined

Which function appends one string at the end of another?

• strcpy()

• strcat()

• strlen()

• strcmp()

What does strcmp() return if the first string is greater than the second?

• 0

• -1

• 1

• Any positive value