C++ Tutorial/Language Basics/Expression

Use function in an expression

<source lang="cpp">#include <iostream> using namespace std;

double box(double length, double width, double height); // use double data

int main() {

 double sum;  
 
 sum = box(10.1, 11.2, 3.3) + box(5.5, 6.6, 7.7) + box(4.0, 5.0, 8.0);  
 
 cout << "The sum of the volumes is " <<  sum << "\n";  
 cout << "The average volume is " << sum / 3.0 << "\n";  
 
 return 0;  

}

// This version of box uses double data. double box(double length, double width, double height) {

 return length * width * height ;  

}</source>

The sum of the volumes is 812.806
The average volume is 270.935