while loop

[newbiemom]

I am totally confused I cant even get started and my assignment is getting later by the day. We have to use a while loop to do several things. This is the source code I have so far , can someone tell me where to go from here
This is me trying to print odd numbers from 2 numbers input by the user. I also have to sum and print the even numbers. I have to print squares of numbers between 1 and 20.

// Source Code
# include <iostream>

using namespace std;

int main

int firstnum;
int 2ndnum;
int odds;
int sumevens = 0;
int counter;
string uppercaseLetters;

sum = 0

cout << " Please input 2 integers,make the 2nd number larger than the first number"
cin >>firstnum>>2ndnum
cout << " The first number entered is :"<< first num;
cout<< " the 2nd numberentered is:" << second num;
cout << endl;
while ((firstnum < second num)&& firstnum % 2 = 0)) 
       cout << firstnum++
else if((firstnum < second num)&& firstnum % 2 = 1)
        cout<< sumevens
        sumevens= sumevens + num

//Do I need to use a counter. How do I get it to go on to the next odd integer?

[dfound]

Sorry , can't understand your question.You are saying that there are only 2 numbers.Then why do you want to go to next odd number.And what exactly do you want the program to do. Is it to print odd number from the 2 numbers taken as input
or is it to print odd numbers after the 2 numbers..?????

[Ganon11]

There are many things syntactically incorrect with your program. First, there are several semicolons missing, especially around the while loop. Next, 2ndnum is an illegal identifier - variable names cannot begin with a number in C++. Also, your int main has no parentheses after it and no brackets - thus, the rest of your code is not even interpreted as being a part of main(). Fix these, and we can work with you from there.

[newbiemom]

[QUOTE=dfound]Sorry , can't understand your question.You are saying that there are only 2 numbers.Then why do you want to go to next odd number.And what exactly do you want the program to do. Is it to print odd number from the 2 numbers taken as input
or is it to print odd numbers after the 2 numbers..

yes, the user must input 2 numbers and then the program must print the odd numbers between those 2 numbers input by the user . Then the program must print and add together all even numbers.

[newbiemom]

[QUOTE=newbiemom]

Sorry , can't understand your question.You are saying that there are only 2 numbers.Then why do you want to go to next odd number.And what exactly do you want the program to do. Is it to print odd number from the 2 numbers taken as input
or is it to print odd numbers after the 2 numbers..

yes, the user must input 2 numbers and then the program must print the odd numbers between those 2 numbers input by the user . Then the program must print and add together all even numbers.

souce code reposted

# include <iostream>
# include <cmath> // for finding squares
using namespace std;

int main;

   int firstNum;
   int secondNum;
   int odds;
   int sumevens = 0;
   int counter;
   string uppercaseLetters;

   cout << " Please input 2 integers,make the 2nd number larger than the first number";
   cin >>firstNum>>secondNum;
   cout << " The first number entered is :"<< firstNum;
   cout<< " the 2nd number entered is:" << secondnum;
   cout << endl;
   while ((firstNum < secondNum)&& firstnum % 2 = 1)) // while loop to print odd #'s
   {
      cout << firstnum++
      else if((firstnum < second num)&& firstnum % 2 = 0) 
      cout<< sumevens
      sumevens= sumevens + num;
   }

// what is a constructor or destructor, I'm getting an error message for that in lines 19 and 20

[Ganon11]

You still haven't declared your main() function properly. What you have is

int main;

It should be

int main() {
   // ... rest of the code here ...
   return 0;
}

Also, you have an else if in the middle of your while loop - with no if statement. else ifs pair up with ifs, not while loops.

[newbiemom]

You still haven't declared your main() function properly. What you have is

int main;

It should be

int main() {
   // ... rest of the code here ...
   return 0;
}

Also, you have an else if in the middle of your while loop - with no if statement. else ifs pair up with ifs, not while loops.

Reposting code

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

int main()
{
          int firstNum; // variable to store first numner entered by the user
          int secondNum; // variable to store second number entered by the user   
          int numOdd = 0; // variable to store odd number 
          int sumEvens = 0; //variable to store sum of odd numbers
          int counter;
          



  cout << " Please input 2 integers,make the 2nd number larger than the first number";
  cin >> firstNum >> secondNum;
  cout << " The first number entered is :"<< firstNum;
  cout<< " the second number entered is:" << secondNum;
  cout << endl;
  while (firstNum < secondNum)
 {     
 if (firstNum % 2 == 1)                       // to get computer to find odd #s
     cin>> numOdd;                            // between 1st and 2nd number
     cout<<" the odd numbers are:"<< numOdd <<  
     numOdd= firstNum++;
 else
      cout<< "That was an even number.";        // if even do something else
          
        
 }       
//  no match for operator= in(+(+std::operator<<[with_traits<char>](((std:basic_0
         // this is the message I am getting for line 27 , What does it mean
      Return 0;

[Ganon11]

 if (firstNum % 2 == 1)                       // to get computer to find odd #s
     cin>> numOdd;                            // between 1st and 2nd number
     cout<<" the odd numbers are:"<< numOdd <<  
     numOdd= firstNum++;

Your cout statement ends in a <<, so the compiler is looking for something else to output - but the next statement is an assignment statement. If you are not outputting anything further, you should get rid of the << and put a semicolon after numOdd, or at least output an endl; there.

[newbiemom]

 if (firstNum % 2 == 1)                       // to get computer to find odd #s
     cin>> numOdd;                            // between 1st and 2nd number
     cout<<" the odd numbers are:"<< numOdd <<  
     numOdd= firstNum++;

Your cout statement ends in a <<, so the compiler is looking for something else to output - but the next statement is an assignment statement. If you are not outputting anything further, you should get rid of the << and put a semicolon after numOdd, or at least output an endl; there.

 while (firstNum < secondNum)
 {     
 if (firstNum % 2 == 1)                       // to get computer to find odd #s
     cin>> numOdd;                            // between 1st and 2nd number
     cout<<" the odd numbers are:"<< numOdd; 
 }
 else cout<< "That was an even number.";        // if even do something else
          
        
        //  no match for operator= in(+(+std::operator<<[with_traits<char>](((std:basic_0
         // this is the message I am getting for line 27 , What does it mean
      system("pause");   
      Return 0;  
}

while loop still is not working.
compilers is saying a ; and primary -expression expected before else
Also do you think this will print the odd numbers and sum them or do i need to doo it differently. I also am going to need to sum the even numbers. I have looked at the examples in my text , but it is stil puzzling

[RedSon]

It appears that you are having much bigger problems then with this one program. You need to read some very basic literature on the structure of a C/C++ program and how to make the correct syntax.

Please look at this website's tutorials:

http://www.cplusplus.com/doc/tutorial/

Just start at the top of the list and work your way down. They will be able to help you much more then we can one line at a time.

[Extremist]

Hi there, I've looked at your code:
There is no 'in' operator - you can't say if something in somethingelse
Then, you are never testing if the while is still valid:
This is the basic syntax for a while- loop:

#include <string>
using namespace std;
int main()
{    
    int num1,num2; 
        
    while(num1 < num2)   // Just as you started it
       {
             if(num1 % 2 == 0)
                   cout << "This is an even number" << endl;
             else
                  cout << "This is an odd number" << endl;
             cout << "Enter a new number: " ;
             cin >> num2;   // Here num2 gets a new value, which enables the while to test if it is smaller than the first one, or to exit.  
            // always remeber a follow-up 
       }
    return 0;
}

Go read the basic syntax for C++ - Your problem is very basic.
But I can't really see what you are trying to do