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Write a function named sumIdx that searches a list of integers for a given value and returns the value + the index at which it
Write a function named sumIdx that searches a list of integers for a given value and returns the value + the index at which it was found. The index of a value not in the array is -1.
Hint: There are 3 parameters for this function, the array, its size, and the value you are searching for.
Example:
int ar[] = {1,2,3,4,5,6};
cout << sumIdx(arr,6,4) << endl;
cout << sumIdx(arr,6,0) << endl;
should output
7
-1.
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