C++ Program to Convert Fahrenheit to Celsius

This C++ program performs conversion of temperature from fahrenheit to celsius. The program takes temperature in fahrenheit degrees performs conversion to celsius degrees using a function and prints the value on standard output stream.

Here is the source code of the C++ program performs conversion of temperature from fahrenheit to celsius. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
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 * C++ Program to Perform Fahrenheit to Celsius Conversion

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 */
```
```
 #include <iostream>
```
```
 
```

 double fahrenheitToCelsius(double fahrenheit)

```
 {
```
```
     double celsius;
```
```
 
```

     celsius = (fahrenheit - 32.0) * 5.0 / 9.0;

```
     return celsius;
```
```
 }
```
```
 
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```
 int main()
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```
 {
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```
     double fahrenheit;
```
```
 
```

     std::cout << "Enter temperature in fahrenheit (in degrees) ";

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     std::cin  >> fahrenheit;
```

     std::cout << "Temperature in Celsius (in degrees) = "

               << fahrenheitToCelsius(fahrenheit) << std::endl;

```
 }
```

$ a.out
Enter temperature in fahrenheit (in degrees) -40
Temperature in Celsius (in degrees) = -40

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