C++ Multiple Variables

In C++, you can declare multiple variables of the same type in a single statement. This helps make code cleaner and more efficient.

Declaring Multiple Variables

Instead of declaring variables separately, you can group them together using commas:

Example

#include <iostream>
using namespace std;

int main() {
    int speedA = 120, speedB = 150, speedC = 180;  // Declaring multiple variables

    cout << "Total combined speed: " << speedA + speedB + speedC << " km/h";

    return 0;
}

#include <iostream>

using namespace std;

​

int main() {

    int speedA = 120, speedB = 150, speedC = 180;  // Declaring multiple variables

​

    cout << "Total combined speed: " << speedA + speedB + speedC << " km/h";

​

    return 0;

}

Explanation:

• The variables speedA, speedB, and speedC are all declared as integers (int) in a single line.
• Their values (120, 150, 180) are assigned immediately.
• The sum of these values is printed using cout.

Assigning One Value to Multiple Variables

C++ also allows multiple variables to be assigned the same value in one step:

Example

#include <iostream>
using namespace std;

int main() {
    int bike1, bike2, bike3;  // Declaring multiple variables
    bike1 = bike2 = bike3 = 220;  // Assigning the same value to all variables

    cout << "Total combined bike performance rating: " << bike1 + bike2 + bike3;

    return 0;
}

#include <iostream>

using namespace std;

​

int main() {

    int bike1, bike2, bike3;  // Declaring multiple variables

    bike1 = bike2 = bike3 = 220;  // Assigning the same value to all variables

​

    cout << "Total combined bike performance rating: " << bike1 + bike2 + bike3;

​

    return 0;

}

Explanation:

• The variables bike1, bike2, and bike3 are all declared without immediate values.
• They are later assigned the same value (220) in a single line.
• The program outputs the sum of all three values.