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C++ float

C++ float

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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C++ float

Part 1: Write a function that receives, as arguments, a pointer to a double array, as well as the number of elements in the array (int). The function must use pointer operations (no block notation such as arrſi]) and calculate the standard deviation of the elements in the array. The function returns the standard deviation to the calling statement. Due to possible rounding or floating-point arithmetic errors, round the result to 4 decimal places. Use the formula below. Each summation can be done with a for-loop. To calculate the square root you may use the <math.h> header file. You may use the following code: float data [] = {11.2, 2.4, 3.13, 16.4, 5.8, 9.22, 4.9, 10.5, 6.5, 2.99}; int N = sizeof (data) / sizeof (float); Example: array = {11.2, 2.4, 3.13, 16.4, 5.8, 9.22, 4.9, 10.5, 6.5, 2.99} stdDev(array) =4.249367 2 1 Wenk: x, is telkens die ide element in die skikking. Hint: x; denotes the ith element in the array.
Transcribed Image Text:Part 1: Write a function that receives, as arguments, a pointer to a double array, as well as the number of elements in the array (int). The function must use pointer operations (no block notation such as arrſi]) and calculate the standard deviation of the elements in the array. The function returns the standard deviation to the calling statement. Due to possible rounding or floating-point arithmetic errors, round the result to 4 decimal places. Use the formula below. Each summation can be done with a for-loop. To calculate the square root you may use the <math.h> header file. You may use the following code: float data [] = {11.2, 2.4, 3.13, 16.4, 5.8, 9.22, 4.9, 10.5, 6.5, 2.99}; int N = sizeof (data) / sizeof (float); Example: array = {11.2, 2.4, 3.13, 16.4, 5.8, 9.22, 4.9, 10.5, 6.5, 2.99} stdDev(array) =4.249367 2 1 Wenk: x, is telkens die ide element in die skikking. Hint: x; denotes the ith element in the array.
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