Programming

# Python 3 code to find sum
# of elements in given array


def _sum(arr):

    # initialize a variable
    # to store the sum
    # while iterating through
    # the array later
    sum = 0

    # iterate through the array
    # and add each element to the sum variable
    # one at a time
    for x in arr:
        sum = sum + x

    return(sum)


# main function
if __name__ == "__main__":
    
    # input values to list
    arr = [12, 3, 4, 15]
    
    # calling function ans store the sum in ans
    ans = _sum(arr)
    
    # display sum
    print('Sum of the array is ', ans)