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#include <stdio.h>
#include <math.h>
#include <stdlib.h>
int m, d, year, choice, i, passed, orig, yy;
char more = 'y';
int days[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
int leap(int x)
int main()
{
{
while (more == 'y' || more == 'Y') {
printf ("\n\tThis program will find days passed or date in the year");
printf ("\n\t\t\t1) Input date (mm/dd/yyyy) to find dates passed");
printf ("\n\t\t\t2) Input passed days to find date in the year");
printf ("\n\n\t\tYour choice (1/2): ");
scanf ("%d",&choice); }
}
char letter (int c)
{
if (c == 1);{
int daysInMonth = 0;
int daysPassed = 0;
int leapyear = 0;
printf("\n\n\n\t\tPlease input date (mm-dd-yyyy): ");
scanf ("%d/%d/%d", &m, &d, &year);
if(year % 4 == 0 && year % 100 != 0 || year % 400 == 0)
leapyear=1;
switch(m-1) {
case 12:
daysInMonth=31;
daysPassed += daysInMonth;
case 11:
daysInMonth=30;
daysPassed += daysInMonth;
case 10:
daysInMonth=31;
daysPassed += daysInMonth;
case 9:
daysInMonth=30;
daysPassed += daysInMonth;
case 8:
daysInMonth=31;
daysPassed += daysInMonth;
case 7:
daysInMonth=31;
daysPassed += daysInMonth;
case 6:
daysInMonth=30;
daysPassed += daysInMonth;
case 5:
daysInMonth=31;
daysPassed += daysInMonth;
case 4:
daysInMonth=30;
daysPassed += daysInMonth;
case 3:
daysInMonth=31;
daysPassed += daysInMonth;
case 2:
if(year % 4 == 0 && year % 100 != 0 || year % 400 == 0){
leapyear=1;
daysInMonth=29;
daysPassed += daysInMonth;
}
else{
daysInMonth=28;
daysPassed += daysInMonth;
}
case 1:
daysInMonth=31;
daysPassed += daysInMonth;
case 0:
if(m <=7 && m % 2 != 0 && d <= 31 || m >= 8 && m % 2 == 0 && d <= 31)
daysPassed += d;
else
if(m == 2 && leapyear == 1 && d <= 29 || m == 2 && leapyear == 0 && d <= 28)
daysPassed += d;
else
if(m <=6 && m % 2 == 0 && d <= 30 && m != 2|| m >= 9 && m % 2 != 0 && d <= 30)
daysPassed += d;
else{
printf("\n\t\t\tYour input mm/dd/yyyy is wrong!");
break;
}
printf("\n\n\t\t\tThere are %d days past in the year", daysPassed);
break;
default: printf("\n\t\t\tYour input mm/dd/yyyy is wrong!");
}
}
if (c == 2)
{
{
if (x % 4 == 0 && x % 100 != 0 || x % 400 == 0)
return 1;
else
return 0;
}
do {
printf ("\n\t\tInput days: ");
scanf ("%d", &passed);
printf ("\n\t\t Year: ");
scanf ("%d", &yy);
if (leap(yy))
days[1] = 29;
else
days[1] = 28;
orig = passed;
for (i = 0; passed > 0; i++)
passed = passed - days [i];
passed = passed + days [i - 1];
printf ("\n\t\tThe date is %d-%d-%d",
i, passed, yy, orig);
}
printf ("\n\n\t\tDo more (Y/N)? ");
scanf ("%s", &more); }
}while (more == 'y' || more == 'Y');
return 0;
}
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