Question

C++

Monkey Business

A local zoo wants to keep track of how many pounds of food each of its three monkeys eats each day during a typical week. Write a program that stores this information in a two-dimensional 3 × 5 array, where each row represents a different monkey, and each column represents a different day of the week. The program should first have the user input the data for each monkey. Then, it should create a report that includes the following information:

•     Average amount of food eaten per day by the whole family of monkeys.
•     The least amount of food eaten during the week by any one monkey.
•     The greatest amount of food eaten during the week by any one monkey.

Input Validation: Do not accept negative numbers for pounds of food eaten.

Write functions

• average()
• least()
• greatest()
• main()

Include a header comment with your name and a description and footer comment with test data.

No magic numbers!

Answer 1

The above problem can be solved in the following steps-

STEP 1 - First define the average() function that takes the food consumed 2D array and then prints the average food consumed per day.

STEP 2 - Define the function least() which takes the food consumed 2D array and then displays the least food consumed during week by any monkey.

STEP 3 - Define the function greatest() which takes the food consumed 2D array and then displays the greatest food consumed during week by any monkey.

STEP 4- Write the main method which asks for user input for 2D matrix and then calls all the above defined functions which display the result.

The comments in the code will help in understanding the code in a better way.

C++CODE-

#include <iostream>
using namespace std;
//define the function average
//takes in the matrix monkeyFood[3][5] and displays the average food consumed per day
void average(int monkeyFood[3][5]){
//variable to store the sum of total food
int sumFood;
//iterate over the matrix and find our the sum of monkeyFood
for(int i=0;i<3;i++){
for(int j=0;j<5;j++){
sumFood = sumFood + monkeyFood[i][j];
}
}
//print the average amount of food eaten per day
//since, number of days = 5. therfore divide the sumFood by 5 to get the average
cout<<"\nAverage amount of food eaten per day by the whole family of monkeys = "<<sumFood/5.0<<endl;
}
//define the funciton least
//takes in the matrix monkeyFood[3][5] and displays the least food consumed by any monkey during the week
void least(int monkeyFood[3][5]){
//initialize min with a large number
int min = 99999;
int monkeyNo; //to store the monkeyNo with least consumed food
//iterate over the monkeyFood[3][5] matrix
for(int i=0;i<3;i++){
//variable to store the food consumed this week for monkey 'i'
int sumFoodWeek = 0;
//iterate over the week
for(int j=0;j<5;j++){
sumFoodWeek = sumFoodWeek + monkeyFood[i][j];
}
//check if sumFoodWeek is less than min
if(sumFoodWeek < min){
//set min to sumFoodWeek
min = sumFoodWeek;
monkeyNo = i+1; //and monkeyNo to i+1 ('i' is index no, so add 1 to it)
}
}
//display the least consumed and the monkey number
cout<<"\nThe least amount of food eaten during the week by any one monkey = "<<min<<endl;
cout<<"The monkey number was "<<monkeyNo<<endl;
}
//define the funciton greatest
//takes in the matrix monkeyFood[3][5] and displays the greatest food consumed by any monkey during the week
void greatest(int monkeyFood[3][5]){
//initialize max with a small number
int max = 0;
int monkeyNo; //to store the monkeyNo with greatest consumed food
//iterate over the monkeyFood[3][5] matrix
for(int i=0;i<3;i++){
//variable to store the food consumed this week for monkey 'i'
int sumFoodWeek = 0;
//iterate over the week
for(int j=0;j<5;j++){
sumFoodWeek = sumFoodWeek + monkeyFood[i][j];
}//check if sumFoodWeek is more than max
if(sumFoodWeek > max){
//set max to sumFoodWeek
max = sumFoodWeek;
monkeyNo = i+1;
}
}
//display the greatest food consumed and monkeyNo
cout<<"\nThe least amount of food eaten during the week by any one monkey = "<<max<<endl;
cout<<"The monkey number was "<<monkeyNo<<endl;
}
//main method
int main()
{   
//2D array to store monkeyFood
int monkeyFood[3][5];
//prompt the user to enter the food consumed data
cout<<"Enter the data for each monkey week wise - \n";
//iterate for 3 monkeys
for(int i=0;i<3;i++){
cout<<"Enter food consumed for monkey "<<i+1<<" : "<<endl;
//iterate for 5 week days
for(int j=0;j<5;j++){
int input;
//while loop which breaks when input is positive
while(1){
cin>>input;
if(input<0){
//when input is Negative, ask the user to enter again
cout<<"Wrong input. Negative not allowed.Enter again \n";
continue;
}
else{
break;
}
}
//set the value in matrix
monkeyFood[i][j] = input;
}
}
//call the three funcitons
average(monkeyFood);
least(monkeyFood);
greatest(monkeyFood);
return 0;
}

IMAGE OF CODE-

1 #include <iostream> 2 using namespace std; 3 //define the function average 4 //takes in the matrix monkey Food[3][5] and displays the average food consumed per day 5 void average(int monkeyFood[3][5]) { //variable to store the sum of total food int sumFood; //iterate over the matrix and find our the sum of monkey Food, for(int i=0;i<3;i++) { for(int j=0; j<5; j++){ 11 sumFood = sumFood + monkeyFood[i][j]; 10- //print the average amount of food eaten per day, //since, number of days = 5. therfore divide the sumFood by 5 to get the average cout<<"\nAverage amount of food eaten per day by the whole family of monkeys = "<<sumFood/5.0<<endl; 17 } 18 //define the funciton least 19 //takes in the matrix monkey Food[3][5] and displays the least food consumed by any monkey during the week, 20 void least(int monkey Food[3][5]) { initialize min with a large number int min = 99999; int monkeyNo; //to store the monkeyNo with Least consumed food //iterate over the monkeyFood[3][5] matrix for(int i=0;i<3;i++){ //variable to store the food consumed this week for monkey 'i' int sumFoodweek = 0; //iterate over the week for(int j=0; j<5; j++){ sumFoodweek = sumFoodWeek + monkey Food[i][j]; //check if sumFoodweek is less than min if(sumFoodweek < min) { //set min to sumFoodweek min = sumFoodweek; monkeyNo = i+1; //and monkeyNo to i+1 ('i' is index no, so add 1 to it),

39 40 //display the least consumed and the monkey number cout<<"\nThe least amount of food eaten during the week by any one monkey = "<<min<<endl; 41 cout<<"The monkey number was "<<monkeyNo<<endl; 42 } 43 //define the funciton greatest 44 //takes in the matrix monkey Food[3][5] and displays the greatest food consumed by any monkey during the week 45 void greatest(int monkeyFood[3][5]){ //initialize max with a small number int max = 0; 48 int monkeyNo; //to store the monkeyNo with greatest consumed food, 49 //iterate over the monkey Food[3][5] matrix 50 for(int i=0;i<3;i++){ //variable to store the food consumed this week for monkey 'i' int sumFoodweek = 0; //iterate over the week for(int j=0; j<5; j++){ sumFoodweek = sumFoodweek + monkey Food[i][j]; }//check if sumFoodweek is more than max if(sumFoodweek > max) { //set max to sumFoodweek max = sumFoodweek; monkeyNo = i+1; 61 51 53 63 64 //display the greatest food consumed and monkeyNo cout<<"\nThe least amount of food eaten during the week by any one monkey = "<<max<<endl; cout<<"The monkey number was "<<monkeyNo<<endl; 65 66 }

71 72 74 67 //main method 68 int main() 69-{ 70 1/2D array to store monkey Food int monkeyFood[3][5]; //prompt the user to enter the food consumed data, 73 cout<<"Enter the data for each monkey week wise - \n"; //iterate for 3 monkeys 75 for(int i=0;i<3;i++) { 76 cout<<"Enter food consumed for monkey "<<i+1<<" : "<<endl; //iterate for 5 week days for(int j=0; j<5; j++){ int input; //while Loop which breaks when input is positive while(1) { cin>>input; if(input<o){ // when input is Negative, ask the user to enter again cout<<"Wrong input. Negative not allowed. Enter again \n"; continue; else{ break; //set the value in matrix monkeyFood[i][j] = input; //call the three funcitons average (monkeyFood); least(monkeyFood); greatest(monkeyFood); return 0; 99 100 } 101 102

OUTPUT-

Enter the data for each monkey week wise - Enter food consumed for monkey 1 : 25 36 74 55 Enter food consumed for monkey 2: 10 45 21 Enter food consumed for monkey 3 : Average amount of food eaten per day by the whole family of monkeys = 109 The least amount of food eaten during the week by any one monkey = 158 The monkey number was 3 The least amount of food eaten during the week by any one monkey = 204 The monkey number was 1

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