Question

Write a program to calculate average result for three experiments. Each experiment has three sets of test result and the user is required to enter all 3 results manually. Using nested loop structure to compute and display the average of the test results for each experiment. The sample program run is as below. Experiment 1 Enter test result 1: 10.1 Enter test result 2: 20.8 Enter test result 3: 33.4 Experiment 1 average: 21.43 Experiment 2 Enter test result 1: 23.4 Enter test result 2: 84 Enter test result 3: 54 Experiment 2 average: 53.80 Experiment 3 Enter test result 1: 56.77 Enter test result 2: 65.15 Enter test result 3: 32.01 Experiment 3 average: 51.31 Press any key to continue

Answer 1

here is code in C++.

#include <bits/stdc++.h>

using namespace std;

//main function

int main()

{

//declare variables

double total;

double avg,res;

int i,j;

// this loop to iterate over the Experiment

for( i=1;i<=3;i++)

{

total=0;

avg=0.0;

cout<<"Experiment "<<i<<endl;

// take input of test result for each Experiment

for( j=1;j<=3;j++)

{

cout<<"Enter test result "<<j<<":";

cin>>res;

// calculate total of each Experiment

total=total+res;

}

//calculating average of each Experiment

avg=total/3;

// printing the output

cout<<"\\Experiment "<<i<<" average: "<<avg<<endl;

}

}

Step-by-step explanation:

Declare variables "total","res" and "avg" to store total of each expression, read test result and average of each Experiment.Outer loop run for each Experiment and take 3 test result, calculate their sum and find average.And then print the average of that Experiment.Similarly this happen for 3 time to take test result and print their average.

Output:

Experiment 1

Enter test result 1:10.1

Enter test result 2:20.8

Enter test result 3:33.4

Experiment 1 average: 21.4333

Experiment 2

Enter test result 1:23.4

Enter test result 2:84

Enter test result 3:54

Experiment 2 average: 53.8

Experiment 3

Enter test result 1:56.77

Enter test result 2:65.15

Enter test result 3:32.01

Experiment 3 average:51.31