I don't know where I missed the error.

it is C++

#include

using namespace std;

int main()

{

float firstNumber;

float secondNumber;

// Prompt user to enter the first number.

cout << "Enter the first number" << endl;

cout << "Then hit enter" << endl;

cin >> firstNumber;

// Prompt user to enter the second number.

cout << "Enter the second number" << endl;

cout << "Then hit enter" << endl;

cin >> secondNumber;

// Echo print the input.

cout << "You input the numbers as " << firstNumber << " and " << secondNumber << endl;

// Now we will swap the values.

float temp = firstNumber;

firstNumber = secondNumber;

secondNumber = temp;

// instead of firstNumber = secondNumber;

//instead of secondNumber = firstNumber;

//Output the values.

cout << "After swapping, the values of the two numbers are " << firstNumber << " and " <<

secondNumber << endl;

return 0;

}