Average of odd numbers till a given odd number | Function to calculate the average of odd numbers ; count odd numbers ; store the sum of odd numbers ; Driver Code
< ? php function averageOdd ( $ n ) { if ( $ n % 2 == 0 ) { echo ( " Invalid ▁ Input " ) ; return -1 ; } $ sum = 0 ; $ count = 0 ; while ( $ n >= 1 ) { $ count ++ ; $ sum += $ n ; $ n = $ n - 2 ; } return $ sum / $ count ; } $ n = 15 ; echo ( averageOdd ( $ n ) ) ; ? >