Question: Assume we have already defined a variable of type int called firstNum and another variable of type int called second um with the following lines

Assume we have already defined a variable of type int called firstNum and another variable of type int called second um with the following lines of code: * int firstNum = ???; // 'firstNum' can have any int value int secondNum = ???; // 'secondNum' can have any int value TASK: Swap the values of firstNum and secondNum. Sample Input: 12 Sample Output: 21

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