given a unsorted array arr[]={5,10,7,18,9,63,4,1,2,12,25}; write a function in C++ to search a element in the array. int search(int *arr,int key); fucntion return the index at which element is found,...

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Extracted text: given a unsorted array arr[]={5,10,7,18,9,63,4,1,2,12,25}; write a function in C++ to search a element in the array. int search(int *arr,int key); fucntion return the index at which element is found, otherwise returns -1.