263: Mainline

In the following program, a trade object, t, is created; values are assigned to the price and number structure variables; and the trade object's price is computed by a function named trade_price.

#include  
struct trade {double price; int number;}; 
double trade_price (double p, int n) {return p * n;} 
main ( ) { 
  double price; 
  int number; 
  struct trade t; 
  while (2 == scanf ("%lf%i", &price, &number)) { 
    t.price = price; 
    t.number = number; 
    printf ("The total value of the trade is %f.\n", 
            trade_price (t.price, t.number)); 
  } 
} 
--- Data ---
2.5 500 5.0 1000 
--- Result --- 
The total value of the trade is 1250.000000. 
The total value of the trade is 5000.000000.