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Chapter 8: Problem 2

What C string will be stored in singing_string after the following code is run? char singing_string[20] = "DoBeDo"; strcat(singing_string, " to you"); Assume that the code is embedded in a complete and correct program and that an include directive for \(< c\) string \(>\) is in the program file.

Short Answer

Expert verified
Answer: The resulting value of the singing_string variable is "DoBeDo to you".

Step by step solution

01

Initialize the character array

Create a character array with a size of 20 and assign it the initial value "DoBeDo". The singing_string array looks like this: {'D', 'o', 'B', 'e', 'D', 'o', '\0'}.
02

Use strcat() function to concatenate " to you"

The strcat() function takes two arguments: the first is the string to which the second string (second argument) will be concatenated. In our case, the first argument is singing_string and the second argument is the string " to you". The function iterates through the second string and appends its characters to the end of the first string, starting after the null character '\0' of the first string.
03

Analyze the result after strcat() function execution

After executing the strcat() function, the singing_string array looks like this: {'D', 'o', 'B', 'e', 'D', 'o', ' ', 't', 'o', ' ', 'y', 'o', 'u', '\0'}. The null character is now at the end of the concatenated string.
04

Determine the C string stored in singing_string

As a result of the given code, the final C string stored in singing_string is "DoBeDo to you".

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Most popular questions from this chapter

Consider the following code (and assume that it is embedded in a complete and correct program and then run): string s; cout << "Enter a line of input:\n"; getline(cin, s); cout << s << "

Consider the following code (and assume it is embedded in a complete and correct program and then run): char a[80], b[80]; cout << "Enter some input:\n"; cin >> a >> b; cout << a << '-' << b << "END OF OUTPUT\n"; If the dialogue begins as follows, what will be the next line of output? Enter some input: The time is now

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