CS256 - Principles of Structured Design Fall 2021

Displaying ./code/h4sol/printLeaps.c

/*

printLeaps.c

You have two things to do to get this program to work.

1. You will take your code from leap.c in h3 and modify it so that the code that 
   calculates whether a year is leap or common is in a seperate function

2. Then, you are going to ask the user what year they were born in, and then 
   print all the leap years between (and including) your birth year and the 
   current year.

 Main has already been started, but needs finished, and the function isLeap has 
 already been partially set up, it just needs the code to perform correctly.



*/


#include <stdio.h>

int isLeap(int); // function prototype

int main(){

	int year, rt; //variable declarations

	//asking the user what year they were born in
	printf("What year were you born?> ");
	scanf("%d", &year);


	printf("The leap years since your birth were...\n");
	/*
		Set up the loop here

		start with the year input by the user, loop until it reaches the current
	    year (2021). 

	    inside the loop, you'll call "isLeap" with value "year" and put the 
	    value into rt. isLeap returns 1 if the year is a leap year, and 0 if 
	    it is a common year.

		if the value of rt is 1, print just the year and a newline, otherwise 
		don't do anything


	*/

	for(int i = year; i <= 2021; i++){
		rt = isLeap(i);
		if(rt == 1)
			printf("%d\n", i);

	}

	return 0;

}

//function definition
int isLeap(int year){

	/*
		Here, you will put the code that calculates whether or not a given year 
		is a leap year. Have the function return a 1 if the year given is a leap
		year, or a 0 if it is a common year. Do NOT put any printf statements 
		inside the function.
		
	*/
	if(year % 4 != 0)
		return 0;
	else if(year % 100 != 0)
		return 1;
	else if(year % 400 != 0)
		return 0;
	else
		return 1;	

}