C++ Program to Convert Celsius to Fahrenheit and Vice-Versa

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1. Introduction

Temperature conversion is a fundamental concept in physics and everyday life. Converting between Celsius and Fahrenheit is a common task in various applications. In this post, we'll walk through a C++ program that allows the user to convert temperatures between these two scales.

2. Program Overview

Our program will:

1. Display a menu to the user to choose the type of conversion (Celsius to Fahrenheit or Fahrenheit to Celsius).

2. Prompt the user to enter the temperature in the chosen scale.

3. Perform the conversion.

4. Display the converted temperature to the user.

3. Code Program

#include<iostream>
using namespace std;

int main() {
    int choice;
    float temp, convertedTemp;

    cout << "Choose an option:" << endl;
    cout << "1. Convert Celsius to Fahrenheit" << endl;
    cout << "2. Convert Fahrenheit to Celsius" << endl;
    cin >> choice;

    switch(choice) {
        case 1:
            cout << "Enter temperature in Celsius: ";
            cin >> temp;
            convertedTemp = (temp * 9/5) + 32;
            cout << "Temperature in Fahrenheit: " << convertedTemp << endl;
            break;

        case 2:
            cout << "Enter temperature in Fahrenheit: ";
            cin >> temp;
            convertedTemp = (temp - 32) * 5/9;
            cout << "Temperature in Celsius: " << convertedTemp << endl;
            break;

        default:
            cout << "Invalid choice!" << endl;
    }

    return 0;
}

Output:

Choose an option:
1. Convert Celsius to Fahrenheit
2. Convert Fahrenheit to Celsius
1
Enter temperature in Celsius: 25
Temperature in Fahrenheit: 77

4. Step By Step Explanation

1. The program displays a menu to the user asking for the type of conversion they'd like to perform.

2. Based on the user's choice, the program then asks for the temperature in the appropriate scale.

3. The conversion is performed using the formulas:

- Celsius to Fahrenheit: (temp * 9/5) + 32- Fahrenheit to Celsius: (temp - 32) * 5/9

4. The converted temperature is then displayed.

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