C++ Function Examples
Real Life Example
To demonstrate a practical example of using functions, let's create a program that converts a value from fahrenheit to celsius:
Example
// Function to convert
Fahrenheit to Celsius
float toCelsius(float fahrenheit) {
return (5.0 / 9.0) * (fahrenheit - 32.0);
}
int main() {
// Set a fahrenheit value
float f_value = 98.8;
// Call the function with the fahrenheit value
float result = toCelsius(f_value);
// Print the fahrenheit value
cout << "Fahrenheit: " << f_value << "\n";
// Print the result
cout << "Convert Fahrenheit to Celsius: " << result << "\n";
return 0;
}
Try it Yourself »
float toCelsius(float fahrenheit) {
return (5.0 / 9.0) * (fahrenheit - 32.0);
}
int main() {
// Set a fahrenheit value
float f_value = 98.8;
// Call the function with the fahrenheit value
float result = toCelsius(f_value);
// Print the fahrenheit value
cout << "Fahrenheit: " << f_value << "\n";
// Print the result
cout << "Convert Fahrenheit to Celsius: " << result << "\n";
return 0;
}