Which of the following function is more appropriate for reading in a multi-word string? ans.

The function that is more appropriate for reading in a multi-word string in many programming languages is the getline() function. This function reads a line from the input stream and stores it into the string passed as an argument. It stops reading in input after it reaches a newline character ('\n') or end-of-file.

Here is a step-by-step explanation:

1. Declare a string variable. For example, string myString;
2. Use the getline() function to read a line of text. For example, getline(cin, myString);
3. The getline() function will read characters from the input stream and store them in the myString variable until it encounters a newline character ('\n') or end-of-file.
4. The newline character is not included in the myString variable. If you want to include it, you will need to append it manually.
5. Now, myString contains the multi-word string that was read from the input.

This function is more appropriate than others (like cin in C++) for reading multi-word strings because it can read spaces, which are typically used to separate words in a string. Other functions might stop reading the input as soon as they encounter a space.