2-1 In your main function in main-2-1.cpp, define and initialise a single-dimensional integer array. Next, define a pointer that points to the first element in the array and pass the pointer to a function. Signature: void print sevens(inteuns, int length) Using only pointer variables (and looping constructs), print only the array values that are exact multiples of 7 from start to finish to standard output. The only program output should be the numbers, one per line with no white space. Note: before accessing an array element, the pointer must be changed to point to the element. You may not use the & operator or notation in your function