A triangular number is defined as m(m + 1)/2 for m = 1, 2, c , and so on. Therefore, the first few numbers are 1, 5, 12, 22, . . . . Write a function with the following header that returns a triangular number: int getTriangularNumber(int n) Write a test program that uses this function to display the first 75 triangular numbers with 5 numbers on each line.

A triangular number is defined as m(m + 1)/2 for m = 1, 2, c , and so on. Therefore, the first few numbers are 1, 5, 12, 22, . . . . Write a function with the following header that returns a triangular number: int getTriangularNumber(int n) Write a test program that uses this function to display the first 75 triangular numbers with 5 numbers on each line.

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter6: Modularity Using Functions

Section6.4: A Case Study: Rectangular To Polar Coordinate Conversion

Problem 9E: (Numerical) Write a program that tests the effectiveness of the rand() library function. Start by...

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(Numerical) Write a program that tests the effectiveness of the rand() library function. Start by initializing 10 counters to 0, and then generate a large number of pseudorandom integers between 0 and 9. Each time a 0 occurs, increment the variable you have designated as the zero counter; when a 1 occurs, increment the counter variable that’s keeping count of the 1s that occur; and so on. Finally, display the number of 0s, 1s, 2s, and so on that occurred and the percentage of the time they occurred.
(Numerical) a. The following is an extremely useful programming algorithm for rounding a real number to n decimal places: Step 1: Multiply the number by 10n Step 2: Add 0.5 Step 3: Delete the fractional part of the result Step 4: Divide by 10n For example, using this algorithm to round the number 78.374625 to three decimal places yields: Step1:78.374625103=78374.625 Step2:78374.625+0.5=78375.125 Step3:Retainingtheintegerpart=78375Step4:78375dividedby103=78.375 Using this algorithm, write a C++ function that accepts a user-entered value and returns the result rounded to two decimal places. b. Enter, compile, and run the program written for Exercise 11a.
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