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Problem:

The ____ function is used to interchange the contents of two string variables?

iterator
traverse
swap
change

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2 Answers

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Solution:

Swap

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The swap() function can interchange the content of two string variables without using any third variable. The swap function is built-in many programming languages that does not return anything, it only swaps the contents of the two variables. While swapping the content of two strings, if we specify the values to variables or excel user-defined values, it will swap the contents of variables but the value of variables will endure the same at the original place. Therefore, it would be more satisfying that we give the contents to the variables by reference, it will swap the contents of variables at the real place.
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Solution:

The Correct Answer of this question is C) swap

Explanation:

The swap() function is employed to swap two numbers. By employing this function, you do not require any third variable to swap two numbers.  In case we assign the values to variables or pass user-defined values, it will swap the values of variables however the value of variables will stay similar at the real place.

For Further Information Go To This Link https://www.geeksforgeeks.org/swap-in-cpp/

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