Program to convert Fahrenheit into Celsius in C++

In this tutorial, we will discuss the concept of the“Program to convert Fahrenheit into Celsius in C++”.

In this post, we will learn how to write a program to convert Fahrenheit into Celsius using the scientific equations in C++ programming language with an Example program.

Temperature and conversion

Java program to convert Fahrenheit into Celsius — Conversion equation

Generally, We have known three types of temperature units Fahrenheit, Celsius, and Kelvin. In this article, we are discussing how to convert temperature units Fahrenheit into Celsius. Fahrenheit and Celsius are the measuring units in degrees as ⁰F and ⁰C respectively.

Scientific equation Celsius = (Fahrenheit-32)*9/5

Code to Fahrenheit to Celsius

Convert Fahrenheit to Celsius

In this program, the user declares and initializes a double variable Fahrenheit as 200.20. It will be converted into Celsius, using the scientific equation in the C++ programming language.

Program 1

//C++ program to convert F into C
#include <iostream>
using namespace std;
int main() {
    float celsius, fahrenheit;
    // variable declaration
   fahrenheit=200.20;
    //Calculate celsius
    celsius=((fahrenheit-32) * 5/9);
    cout<<fahrenheit<<" Fahrenheit is: "<<celsius <<" Celsius";
    //display result on the screen

    return 0;
}

When the above code is executed, it produces the following result

200.2 Fahrenheit is: 93.4444 Celsius

Convert Fahrenheit to Celsius – Entered by user

In this program, the user declares the variable as Double, then the user is asked to enter a double value to Fahrenheit. The entered value will be converted into Celsius, using the scientific equation in the C++ programming language.

Program 2

//C++ program to convert F into C
#include <iostream>
using namespace std;
int main() {
    float celsius, fahrenheit;
    // variable declaration
    // ask input from the user
    cout<<"Enter the temperature in fahrenheit:";
    cin>>fahrenheit;//reading the input
    //Calculate fahrenheit
    celsius=((fahrenheit-32) * 5/9);
    cout<<fahrenheit<<" Fahrenheit is: "<<celsius <<" Celsius";
    //display result on the screen

    return 0;
}

When the above code is executed, it produces the following result

Enter the temperature in fahrenheit:211.2
211.2 Fahrenheit is: 99.5556 Celsius

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