Question

This lab is to give you more experience with CH Making Decisions and Looping Please do the following Review Questions 1. Using the following chart, write an if else if statement that assigns. 10..15 or 20 to commission, depending on the value in sales. Make sure sales is valid (ie. >= 0) Sales Commission Rate Up to $10.000 10% $10,000 to $15,000 15% Over $15,000 20% 2. Convert the following if else if statement into a switch statement. double number = 678.34598654; int choice: cout<<"Enter choice between 1 and 4": cin >> choice; if (choice == 1) cout <<fixed << showpoint <<setprecision 2); else if (choice == 2 choice=3) cout <<fixed <<showpoint <<setprecision 4); else if (choice --4) cout <<fixed << showpoint setprecision(6): else cout <<fixed << showpoint <<setprecision(8); cout << number 3. Write an if statement that prints the message "The number is valid if the variable is within the range 0 through 100 and prints "The number is invalid" otherwise. 4. Write a loop for each of the following: a. The sum of all even numbers between 2 and 100 (inclusive) b. The sum of all squares between 1 and 100 (inclusive). (If you use the pow function the first parameter must be a float or double). c. The sum of all odd numbers between a and b (inclusive). Where a and bare read in by the user. 5. How often do the following loops execute? Assume that i is not changed in the loop body. a. for (int i -1; i < 10; i++)... b. for (int i=0; i<10; i++)... c. for (int i -10; i > 0; i--).. d. for (int i = -10; i = 10; i++)... e. for (int i --10; i <- 10:1-1+2)... CPSC 1103 LAB #4 Page 2 of 2

Answer 1

1)

/*******************Com.cpp****************/

#include<iostream>
using namespace std;

int main(){
  
   float commisionRate = 0,salesAmount;
  
   cout<<"Enter sales amount";
   cin>>salesAmount;
   while(salesAmount<0){
      
       cout<<"Enter valid amount";
       cin>>salesAmount;
   }
  
   if(salesAmount<=10000){
      
       commisionRate = 10;
   }
   else if(salesAmount>10000&&salesAmount<=15000){
      
       commisionRate = 15;
   }
   else{
      
       commisionRate = 20;
   }
  
   cout<<"Your commission rate is "<<commisionRate;
  
   return 0;
}

/*************output*********************/

Enter sales amount14000
Your commission rate is 15
--------------------------------

D:AChegg-workspace\com.exe Enter sales amount14000 Your commission rate is 15

2)

/**********************precision.cpp*********************/

#include<iostream>
#include <iomanip>
using namespace std;

int main(){
  
   double number = 678.34598654;
   int choice;
   cout<<"Enter choice between 1 and 4";
   cin>>choice;
   switch(choice){
      
       case 1:
           cout<<fixed<<showpoint<<setprecision(2);
           break;
       case 2:
               cout<<fixed<<showpoint<<setprecision(4);
           break;
       case 3:
               cout<<fixed<<showpoint<<setprecision(4);
           break;
       case 4:
               cout<<fixed<<showpoint<<setprecision(6);
           break;
       default :
               cout<<fixed<<showpoint<<setprecision(8);
           break;
   }
  
   cout<<number;
   return 0;
}

/*****************output****************/

Enter choice between 1 and 43
678.3460
--------------------------------

DAChegg-workspace\precision.exe Enter choice between 1 and 43 678.3460 Process exited after 1.701 seconds with return value Press any key to continue

3)

/***************************num.cpp**************/

#include<iostream>
using namespace std;

int main(){
  
   double number;
   cout<<"Enter number: ";
   cin>>number;
  
   if(number>=0&&number<=100){
      
       cout<<"Number is valid";
   }
   else{
      
       cout<<"The number is invalid";
   }
   return 0;
}

/**************output**********/

Enter number: 101
The number is invalid
--------------------------------

DAChegg-workspace\num.exe Enter number: 101 The number is invalid Process exited after 1.627 seconds with return value e Press any key to continue .

4)

/*********************que4.cpp**************/

#include<iostream>
using namespace std;

int main(){
  
   cout<<"Print sum of even number"<<endl;
   int number,sum = 0;
   for(number=2;number<=100;number++){
      
       if(number%2==0){
          
           sum+=number;
       }
   }
  
   cout<<"Sum of even number between 2 and 100 is "<<sum<<endl;
  
   cout<<"\nSum of square"<<endl;
   sum = 0;
   for(number=1;number<=100;number++){
  
       sum+=number*number;      
   }
  
   cout<<"sum of squres: "<<sum<<endl;
  
   int a,b,i;
   sum = 0;
   cout<<"sum of odd numbers between a and b"<<endl;
   cout<<"Enter a : ";
   cin>>a;
   cout<<"Enter b: ";
   cin>>b;
   for(i=a;i<=b;i++){
      
       if(i%2==1){
          
           sum+=i;
       }
   }
  
   cout<<"Sum of all odd number between "<<a<<" and "<<b<<" is: "<<sum;
   return 0;
}

/*********output*************/

Print sum of even number
Sum of even number between 2 and 100 is 2550

Sum of square
sum of squres: 338350
sum of odd numbers between a and b
Enter a : 1
Enter b: 10
Sum of all odd number between 1 and 10 is: 25
--------------------------------

DAChegg-workspace\sum.exe Print sum of even number Sum of even number between 2 and 100 is 2550 Sum of square sum of squres: 338350 sum of odd numbers between a and b Enter a 1 Enter b: 1e Sum of all odd number between 1 and 10 is: 25 Process exited after 10.64 seconds with return value 0 Press any key to continue .

Q5)

a) loop will execute 1 to 10 with increment of 1

b) loop will execute 0 to 9 with increment of 1

c) loop will execute 10 to 1 with decrement of 1

c) loop will execute -10 to 10 ,increment of 1

d) loop will execute -10 to 10 with increment of 2 every time.

Please let me know if you have any doubt or modify the answer, Thanks :)