calculator loop

[moot1]

whats wrong with this??

#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
    int operation;
    int howmany;
    int num;
    int temp;
    int answer;


    cout << "Here are your options: " << endl << endl;
    cout << "1. Addition" << endl;
    cout << "2. Subtraction" << endl;
    cout << "3. Multiplication" << endl;
    cout << "4. Division" << endl;
    cin >> operation;

    switch(operation){

        case 1:

        for (int i=1; i<=num; i++)
{
   cout << "enter how many numbers you want to use"
   cin>>num;
   temp=temp+num;
}

cout<<"The sum of the "<<num<<" numbers is: "<<temp;

cout<<"The sum of the "<<num<<" numbers is: "<<answer;


    }
    cin.get();
    return 0;

}

[Peter87]

I guess it's the indentation that's wrong ... The real problem is that you use num before you give it a value

[moot1]

ok i know the indentaion is wrong, im just trying to get it to work. here are the erors:

C:\Users\\Desktop\c++\New folder\a\Untitled2.cpp||In function 'int main()':|
C:\Users\\Desktop\c++\New folder\a\Untitled2.cpp|31|error: a function-definition is not allowed here before '{' token|
C:\Users\\Desktop\c++\New folder\a\Untitled2.cpp|67|error: expected '}' at end of input|
C:\Users\\Desktop\c++\New folder\a\Untitled2.cpp|67|error: expected '}' at end of input|
||=== Build finished: 3 errors, 0 warnings ===|

#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
    int operation;
    int howmany;
    int num;
    int temp;
    int answer;


    cout << "Here are your options: " << endl << endl;
    cout << "1. Addition" << endl;
    cout << "2. Subtraction" << endl;
    cout << "3. Multiplication" << endl;
    cout << "4. Division" << endl;
    cin >> operation;

    switch(operation){

        case 1:
        #include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
    int operation;
    int howmany;
    int num;
    int temp;
    int answer;


    cout << "Here are your options: " << endl << endl;
    cout << "1. Addition" << endl;
    cout << "2. Subtraction" << endl;
    cout << "3. Multiplication" << endl;
    cout << "4. Division" << endl;
    cin >> operation;

    switch(operation){

        case 1:
        cout << "enter how many numbers you want to use"
        cin>>num;

        for (int i=1; i<=num; i++)
{
    temp=temp+num;
}

cout<<"The sum of the "<<num<<" numbers is: "<<temp;

cout<<"The sum of the "<<num<<" numbers is: "<<answer;


    }
    cin.get();
    return 0;

}

[moot1]

oh i see

[moot1]

wait...something is wrong...when i compile it works...i press 1 to add...i enter how many numbers i want to use....it doesnt let me choose the numbers and just prints a random number on the screen?

#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
    int operation;
    int howmany;
    int num;
    int temp;
    int answer;


    cout << "Here are your options: " << endl << endl;
    cout << "1. Addition" << endl;
    cout << "2. Subtraction" << endl;
    cout << "3. Multiplication" << endl;
    cout << "4. Division" << endl;
    cin >> operation;

    switch(operation){

        case 1:
        cout << "enter how many numbers you want to use";
        cin>>num;

        for (int i=1; i<=num; i++)
{
    temp=temp+num;
}

cout<<"The sum of the "<<num<<" numbers is: "<<temp;

cout<<"The sum of the "<<num<<" numbers is: "<<answer;


    }
    cin.get();
    return 0;

}

[Peter87]

The loop only do this temp=temp+num; and temp and answer are both uninitialized so it's not strange that it prints what appears to be random numbers.

[moot1]

so can you please help me fix it

[Peter87]

You probably want to input numbers with std::cin inside the loop.