ifelif allows us to take one action for multiple decision entries.
#define USA 1 #define EUP 1 #include <stdio.h> #if (defined (USA)) #define currency_rate 46 #elif (defined (EUP)) #define currency_rate 100 #else #define currency_rate 1 #endif main() { int rs; rs = 10 * currency_rate; printf ("%d\n", rs); }
460