Homework & Coursework Questions

int days_in_month(int month, int year);

int days_in_month(int month, int year)
{                                       /* variable declaration */
 int days;
 int yr;
 #ifdef DEBUG
 printf("debug:Enter days_in_month: month = %d, year = %d\n", month, year);
 #endif
                /* while the months are greater than 0 and less than 13 */
        while(month>0 && month<13)
        {
                /*if the month are 1,3,5,7,8,10,12*/
if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
                {
                days=31;                /* initialize the days */
                #ifdef DEBUG
                printf("debug:Exit days in month: %d\n", days);
                #endif

                return days;            /* return variable*/
                }
                                /* if the months are 4,6,9,11 */
                if(month==4||month==6||month==9||month==11)
                {
                days=30;        /* initialize the day */
                #ifdef DEBUG
                printf("debug:Exit days in month: %d\n", days);
                #endif

                return days;            /* return the amount of days*/
                }
                if(month==2)            /* if the month is 2 */
                {
                yr=is_leap(year);       /* initialize year */
                if(yr == 1)             /* if the conditino is true*/
                {
                days=29;                /* initialize days */
                #ifdef DEBUG
                printf("debug:Exit days in month: %d\n", days);
                #endif

                return days;            /* return the variable */
                }
                if(yr == 0)             /* if the condition is false */
                {
                days=28;                /*initialize days */
                #ifdef DEBUG
                printf("debug:Exit days in month: %d\n", days);
                #endif

                return days;            /* return days */
                }
        }
 }
}
   
int is_leap(int year);

#include "leap.h"

int is_leap(int year)
{
  while(year != 0)                      /* While there are more input*/
  {
                                /*if the conditions are true */

  if(year%400 == 0 || (year%4 == 0 && year%100!=0))
    {
                                /*return variable*/
     return 1;
    }
                                /* if the conditions are false */
   else
    {
                                /* Return the variable */                        
     return 0;
    }
  }
}

printf(" Enter start date: ",day0, month0, year0);
printf( " Enter stop date: ", day1, month1, year1);
flag=scanf("%d %d %d %d %d %d", &day0, &month0, &year0, &day1, &month1, &year1);
while(flag!= EOF)
{
   int yeardif;
   int monthdif;
  int daydif;
 int n =0;
int monthday = 0;
int total = 0;

//Days difference due to months
 if ( month0<month1)
{ monthdif=(11- month0)+(month1);
for(int i = 11, i > month0, i--){
monthday =  days_in_month(i, year0);
total = total + monthday;
}

for(int x = month1; x > 0; x--){
 monthday = days_in_month(x, int year1);
 total = total + monthday;
}

}

else
{
for(int i = month0; i > month1; i--){
        monthday = days_in_month(i, year0);
        total = total + monthday;
}
}


//Days difference due to years
for (int i = year0, i < year1,i++){
int leap = is_leap(i);
if (leap==1)
{ n=n+1;
}
yeardif = (n*(366)+(year1-year0-n)(365));

total = yeardif + total;
}