Videos
(Statistics) a. Write a C++
b. Extend the program written for Exercise 1a to display each grade and its letter equivalent, using the following scale:
(a)
Program Plan:
- Declaremax and count variables of int data type.
- Declare sumand average variables of double data type
- Declare an array grade[100] of double data type.
- Use for loop to read all the array elements from the user.
- Use if statementto check the negative value.
- Calculatethe sum and average of all the user entered score.
- Display the calculated results to the user.
- Use for loop to calculate grades below the average.
- Use if condition to find the grades below the average.
- Display the grades below average by using the asterisk in the front of the grade(*).
- int main() method function is used to perform all the tasks.
Program Description: The main purpose of the program is to read all scores from the user, storing the scores in the grade[] array, calculating the sum and average of all the entered elements and to display the grades below average by using the asterisk in the front of grade(*).
Explanation of Solution
Program code:
//including required header files
#include<iostream>
usingnamespacestd;
//main method
int main()
{
//declaring required variables
int max = 100, count =0;
double sum=0, average=0;
//Declaring the array to store value of grades
double grade[max];
cout<<"Enter scores and any negative number to terminate"<<endl;
//This loop will execute maximum of 100
//while loop
while(count<max){
//Reading inputs from user
cin>>grade[count];
//if the number is negative then loop is terminated
if(grade[count]<0)
break;
//adding the entered sum
sum = sum + grade[count];
//increnting loop variable
count++;
}//end of while loop
//Calculating average
average = sum/count;
//displaying Calculated results to the user
cout<<"Total of the scores: "<<sum<<endl;
cout<<"Average of the scores: "<<average<<endl;
cout<<"Scores below average: ";
//for loop to find the score below average
for(int i=0; i<count; i++)
{
//if the score is below average
if(grade[i]<average)
{
cout<<"\n * "<<grade[i];
}
}
return0;
}//end of the main method
Sample output:
(b)
Program Plan:
- Declaremax and count variables of int data type.
- Declare sumand average variables of double data type
- Declare an array grade[100] of double data type.
- Use for loop to read all the array elements from the user.
- Use if statement to check the negative value.
- Calculate the sum and average of all the user entered score.
- Display the calculated results to the user.
- Use for loop to calculate grades below the average.
- Use if condition to find the grades below the average.
- Display the grades below average by using the asterisk in the front of grade(*).
- Use if condition to find the grade.
- int main() method function is used to perform all the task.
Program Description: The main purpose of the program is to modify the program code given in part (a) so that the code will also display the grade letters to the user.
Explanation of Solution
Program code:
//including required header files
#include<iostream>
usingnamespacestd;
//main method
int main()
{
//declaring required variables
int max = 100, count =0;
double sum=0, average=0;
//Declaring the array to store value of grades
double grade[max];
cout<<"Enter scores and any negative number to terminate"<<endl;
//This loop will execute maximum of 100
//while loop
while(count<max){
//Reading inputs from user
cin>>grade[count];
//if the number is negative then loop is terminated
if(grade[count]<0)
break;
//adding the entered sum
sum = sum + grade[count];
//increnting loop variable
count++;
}//end of while loop
//Calculating average
average = sum/count;
//displaying Calculated results to the user
cout<<"Total of the scores: "<<sum<<endl;
cout<<"Average of the scores: "<<average<<endl;
cout<<"Scores below average: ";
//for loop to find the score below average
for(int i=0; i<count; i++)
{
//if the score is below average
if(grade[i]<average)
{
cout<<"\n * "<<grade[i];
}
}
//displaying message to the user
cout<<"\n Grades and equivalent letters are: ";
//for loop
for(int i=0; i<count; i++)
{
//if grades are between 90 and 100
if(grade[i]<=100&& grade[i]>=90){
cout<<" \n"<<grade[i]<<": A"<<endl;
}
/*if grades are greater than or equal to 80 and less than 90*/
elseif(grade[i]<90&& grade[i]>=80){
cout<<" \n"<<grade[i]<<": B"<<endl;
}
/*if grades are greater than or equal to 70 and less than 80*/
elseif(grade[i]<80&& grade[i]>=70){
cout<<" \n"<<grade[i]<<": C"<<endl;
}
/*if grades are greater than or equal to 60 and less than 70*/
elseif(grade[i]<70&& grade[i]>=60)
{
cout<<" \n"<<grade[i]<<": D"<<endl;
}
//otherwise
else{
cout<<" \n"<<grade[i]<<": F"<<endl;
}
}
return0;
}//end of the main method
Sample output:
Want to see more full solutions like this?
Chapter 7 Solutions
C++ for Engineers and Scientists
- Please solve and show all steps. True or false? Consider congestion control in TCP. When the timer expires at the sender, the value of ssthresh is set to one-half of the last congestion window.arrow_forwardPlease solve and show all work. What are the purposes of the SNMP GetRequest and SetRequest messages?arrow_forwardPlease solve and show all steps. Three types of switching fabrics are discussed in our course. List and briefly describe each type. Which, if any, can send multiple packets across the fabric in parallel?arrow_forward
- Please solve and show steps. List the four broad classes of services that a transport protocol can provide. For each of the service classes, indicate if either UDP or TCP (or both) provides such a service.arrow_forwardPlease solve and show all work. What is the advantage of web caches, and how does it work?arrow_forwardPlease solve and show steps. Consider a DASH system for which there are N video versions (at N different rates and qualities) and N audio versions (at N different rates and qualities). Suppose we want to allow the player to choose at any time any of the N video versions and any of the N audio versions. If we create files so that the audio is mixed in with its matched-rate video and the server sends only one media stream at a given time, how many files will the server need to store (each with a different URL)? If the server instead sends the audio and video streams separately and has the client synchronize the streams, how many files will the server need to store?arrow_forward
- Please solve and show all work. Recall that TCP can be enhanced with SSL to provide process-to-process security services, including encryption. Does SSL operate at the transport layer or the application layer?arrow_forwardPlease solve and show all work. Compute the checksum of the words 1011 1001, 1001 1110, and 0111 1011. Show all work.arrow_forwardPlease solve and show all work. Suppose you can access the caches in the local DNS servers of your department. Can you propose a way to roughly determine the Web servers (outside your department) that are most popular among the users in your department? Explainarrow_forward
- Please solve and show all work. Thank you. Suppose Host A sends two TCP segments back to back to Host B over a TCP connection. The first segment has sequence number 120; the second has sequence number 170. How much data is in the first segment? Suppose that the first segment is lost but the second segment arrives at B. In the acknowledgment that Host B sends to Host A, what will be the acknowledgment number?arrow_forwardIn Matlab script, how would you compute a Reimann sum to approximate the area under the y=sin(x) from a =0 to b = p1/2 with n=6 subintervals using left-endpoints. Use for loop. Assign the result to Lsum.arrow_forwardplease solve using the first step i did which was c(n,n) = 1/C(5,5) = 1. <n=5> P(n,n) = n!/p(8,8)= 8! <n=8>arrow_forward
C++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr
C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage