This works for me, perhaps your compiler doesn't like K&R C.
Code:
#include <stdio.h>
struct date /* structure to hold date */
{
int month;
int day;
int year;
} date_1;
long int funct1 (int y,int m) /* part of # of days calc. */
{
long int result;
if ( m <= 2 )
y -= 1;
result = y;
return (result);
}
long int funct2 (int m)
{
long int result;
if ( m <= 2 )
result = m + 13;
else
result = m + 1;
return(result);
}
/* Function to calculate the number of days in dates */
long int day_count (int m, int d, int y)
{
long int number;
number = 1461 * funct1(y,m) / 4 + 153 * funct2(m) / 5 + d;
return (number);
}
int main ( void )
{
long int number_of_days1;
int day_of_week, screw_up = 0;
printf(" \n\n******************************************\n");
printf("THIS PROGRAM WILL COMPUTE THE DAY OF THE WEEK (SUNDAY - SATURDAY)\n");
printf("\t\tTHAT A GIVEN DATE WILL FALL ON\n");
printf(" ********************************************\n\n");
printf ("Enter a date (mm dd yyyy) i.e. 03 12 1985 \n");
scanf ("%d %d %d", &date_1.month, &date_1.day, &date_1.year);
number_of_days1 = day_count (date_1.month, date_1.day, date_1.year);
printf ("\nThe date is: " );
day_of_week = (number_of_days1 - 621049) % 7;
switch (day_of_week)
{
case 0 :
printf ("Sunday,");
break;
case 1 :
printf ("Monday,");
break;
case 2 :
printf ("Tuesday,");
break;
case 3 :
printf ("Wednesay,");
break;
case 4 :
printf ("Thursday,");
break;
case 5 :
printf ("Friday,");
break;
case 6 :
printf ("Saturday,");
break;
default:
printf ("Something is screwed up -- Maybee you entered\n");
printf ("a date earlier than 01 12 1600\n\n");
screw_up = 1;
}
if ( !screw_up )
printf (" %02d/%02d/%02d\n", date_1.month, date_1.day, date_1.year);
return 0;
}
-Prelude
have any of u been able to run the file on your machines?
