C++ MQCs with Explanation (CHAPTER 4: FUNCTIONS IN C++)

The ‘call by reference’ approach of invoking a function enables us to?

1. copy the values of arguments into the calling function
2. not to alter the values of the original variables in the calling program
3. change the values of the variables in the calling program
4. use the function on the left-hand side of an assignment statement

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Answer: 

Option c: change the values of the variables in the calling program

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Explanation Here