#include <stdio.h>
#define DRINKING_AGE 21
int curAge, noYears;
 
int calcYear(int curAge);
 
int main(void)
{
	//Local Variables
	char userName[50];
	//Ask the suer for name and birth year
	printf("Enter your name: ");
	scanf("%s", &userName);
	printf("Enter your current age: ");
	scanf(" %d", &curAge);
 
	//Call the function to calculate the 
	noYears = calcYear(curAge);
 
	printf("%s is %d years old and will be %d in %d years.", 
			userName, curAge, DRINKING_AGE, noYears);
	return 0;
}
 
/* The function to get the future year */
int calcYear(int curAge)
{
	return(DRINKING_AGE-curAge);
}
 

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