C++ Problems: Integers And Exchanging Currencies

1. Design an algorithm that will read two numbers and an integer code from the screen (print a menu of the choices first). If the code is 1, compute the sum of the two numbers. If the code is 2, compute the difference of the first number minus the second. If the code is 3, compute the product. If the code is 4 and the second number is not 0, compute the quotient (divide the first number by the second). If the code is not 1,2,3, or 4, display an error message. Finally, display the two numbers, the code, and the result (echo the input).

2. Create an entire program that allows a user to exchange other currencies for US Dollars.
Your program should first display a menu of possible exchanges:
   
   To Convert Canadian Dollars to US Dollars        choose 1
   To Convert Euros to US Dollars                            choose 2
   To Convert Indian Rupees to US Dollars             choose 3
   To Convert Japanese Yen to US Dollars             choose 4
   To Convert Mexican Pesos to US Dollars           choose 5

Enter choice:

After the user chooses an exchange currency, the program should ask the user if they are a US Resident, and set a resident flag in the program according to the answer.
Are you a US Resident? [Y/N]:

Finally, your program should prompt for the number of foreign currency units to convert and should calculate and display the appropriate exchange value using the following scales.

Currency                    Resident exchange rate                 Non-resident exchange rate
Canadian Dollars                             .9813                             1.00
Euros                                                 .757                                .8
Indian Rupees                                  52.53                             55
Japanese Yen                                  80.92                             85
Mexican Pesos                                13.15                               15

For user input:
Enter choice: 4
Are you a US Resident? [Y/N]: N
Enter foreign currency units: 80000
Should generate output:
80000 Yen can be exchanged for 941.17 US Dollars.

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#include <iostream>

using namespace std;

int main()
{
int choice, num1, num2,
result;
cout << "Enter number 1: ";

cin >> num1;
cout << "Enter number 2: ";
cin >> num2;
cout << "Choices: \n1. Add the numbers\n2. Computer the difference of the numbers\n3. Compute the product\n4. Compute the quotient (assuming number 2 isn't 0\nEnter code: ";
cin >> choice;
if(choice == 1)
result = num1+num2;
else if(choice == 2)
result = num1-num2;
else if(choice == 3)...