Convert Celsius to Fahrenheit in C++

Learn how to build a Celsius to Fahrenheit converter in C++. This exercise is perfect for mastering floating-point variables, mathematical formulas, and user interaction through the console.

Understanding the Conversion Logic

Double Data Type

We use double instead of int to handle decimal points, ensuring precision during temperature calculations.

Conversion Formula

The logic follows the standard formula: (Celsius × 9/5) + 32. C++ processes this using operator precedence.

Formatted Output

Using cout, we concatenate strings and variables to display a clear, human-readable result in Fahrenheit.

Pro Tip: Order of Operations

In C++, multiplication and division happen before addition. Using parentheses (celsius * 9 / 5) makes your code easier for others to read and maintain.

Learning Objectives

Declare double variables for decimal precision.
Capture temperature input using cin.
Translate a mathematical formula into C++ syntax.
Display the converted Fahrenheit result.

C++ Source Code: Celsius to Fahrenheit

converter.cpp C++ Beginners

#include <iostream>
using namespace std;

int main() {
    double celsius, fahrenheit;

    // Prompt user for input
    cout << "Enter temperature in Celsius: ";
    cin >> celsius;

    // Apply the conversion formula
    fahrenheit = (celsius * 9 / 5) + 32;

    // Output the result
    cout << "Temperature in Fahrenheit: " << fahrenheit << endl;

    return 0;
}

Program Console Output:

Enter temperature in Celsius: 25
Temperature in Fahrenheit: 77

Floating-Point & Math Logic

Learning Objectives

C++ Source Code: Celsius to Fahrenheit

Program Console Output:

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