ifelse
The ifelse directive lets us specify the action if the condition is not true.
Example
#define UKP 1
#include <stdio.h>
#if (defined (USD)) // B
#define currency_rate 46
#else
#define currency_rate 100 //C
#endif //D
int main()
{
int rs;
rs = 10 * currency_rate; //H
printf ("%d\n", rs);
getchar();
return ;
}
Explanation
- Statement B indicates the ifelse directive.
- If the identifier USD is defined, the currency rate is taken as 46; otherwise, the currency rate is taken as 100.
- Since USD is not defined, the currency rate is taken as 46.
Point to Remember
- The ifelse directive allows us to take action if the condition is not satisfied.
