online compiler and debugger for c/c++

/****************************************************************************** Online C Compiler. Code, Compile, Run and Debug C program online. Write your code in this editor and press "Run" button to compile and execute it. *******************************************************************************/ #include <stdio.h> #include <stdint.h> #include <stdbool.h> #include <inttypes.h> #include <time.h> /*---------------------------------------------------------------------------*/ // CCS code and wrappers needed to co-exist with standard C time.h stuff. /*---------------------------------------------------------------------------*/ // Constants // Define this to make the CCS routine return seconds since 1/1/2010. #define TIME_T_USES_2010 #if defined(TIME_T_USES_2010) #define SECOFFSET 1262304000 // 1/1/1970-1/1/2010 seconds. #else #define SECOFFSET 0 #endif #define FALSE false #define TRUE true // Enums typedef enum { SUNDAY = 0, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY } ccs_Weekday; typedef enum { JANUARY = 0, FEBRUARY, MARCH, APRIL, MAY, JUNE, JULY, AUGUST, SEPTEMBER, OCTOBER, NOVEMBER, DECEMBER } ccs_Month; // Typedefs/structures typedef int32_t ccs_time_t; typedef struct ccs_tm { uint8_t tm_sec; // seconds after the minute (0-59) uint8_t tm_min; // minutes after the hour (0-59) uint8_t tm_hour; // hours since midnight (0-23) uint8_t tm_mday; // day of the month (1-31) ccs_Month tm_mon; // month of the year (0-11) uint16_t tm_year; // years since 1900 ccs_Weekday tm_wday; // day of the week (0-6) (Sunday=0) uint16_t tm_yday; // day of the year (0-365) } ccs_struct_tm; // CCS time.c functions /* Returns the number of days in a given month, leap year dependent */ static uint8_t ccs_DaysInMonth(uint8_t month, bool IsLeapYear) { switch(month) { case JANUARY: case MARCH: case MAY: case JULY: case AUGUST: case OCTOBER: case DECEMBER: return 31; case FEBRUARY: if(IsLeapYear) return 29; return 28; case APRIL: case JUNE: case SEPTEMBER: case NOVEMBER: return 30; // error default: return 0; } } /* Determines if a year is a leap year * 'year' is the number of years since 1900 * A year is a leap year if is evenly divisible by 4 while not divisible by 100 * or if it is evenly divisible by 400. (Ex. 2000 is a leap year, 2100 is not) * Returns TRUE if the year is a leap year, FALSE if not */ static bool ccs_LeapYear(uint16_t year) { if( ((year + 1900) % 400 == 0) || (((year + 1900) % 4 == 0) && ((year + 1900) % 100 != 0)) ) return TRUE; return FALSE; } // see time.h for documentation ccs_time_t ccs_mktime(ccs_struct_tm * timeT) { ccs_time_t unixTime = 0; bool isLeapYear = FALSE; uint16_t i = 0; if(timeT != NULL) { unixTime += timeT->tm_sec; unixTime += (uint32_t)(timeT->tm_min) * 60; unixTime += (uint32_t)(timeT->tm_hour) * 3600; isLeapYear = ccs_LeapYear(timeT->tm_year); /* Clamp the month to [0,11) */ timeT->tm_mon %= 12; for(i = 1;i <= timeT->tm_mon;i++) { unixTime += (ccs_DaysInMonth(i - 1,isLeapYear) * 86400); } /* Clamp the days in the month */ //timeT->tm_mday %= DaysInMonth(timeT->tm_mon,isLeapYear); unixTime += (timeT->tm_mday - 1) * 86400; if(isLeapYear) { timeT->tm_yday = (unixTime / 86400) % 366; } else { timeT->tm_yday = (unixTime / 86400) % 365; } #if defined(TIME_T_USES_2010) i = 110; #else i = 70; #endif while(i < timeT->tm_year) { isLeapYear = ccs_LeapYear(i); if(isLeapYear) { unixTime += (31622400); // seconds in 366 days } else { unixTime += (31536000); // seconds in 365 days } i++; } #if defined(TIME_T_USES_2010) timeT->tm_wday = ((unixTime / 86400) + 5) % 7; #else timeT->tm_wday = ((unixTime / 86400) + 4) % 7; #endif } return unixTime; } // Test code. int main() { // 31,536,000 seconds in a year. // 86,400 seconds in a day // 31,622,400 seconds in a leap year. printf (" 31536000 seconds in a year.\n" " 86400 seconds in a day\n" " 31622400 seconds in a leap year.\n" "1729810550 seconds since 1/1/1970\n"); // Standard C time_t rawtime; struct tm * ptm; time ( &rawtime ); ptm = gmtime ( &rawtime ); printf ("STD: %04u-%02u-%02u %02u:%02u:%02u is %10"PRIu32" seconds since 1/1/1970\r\n", ptm->tm_year + 1900, ptm->tm_mon + 1, ptm->tm_mday, ptm->tm_hour, ptm->tm_min, ptm->tm_sec, rawtime); printf ("STD: %04u-%02u-%02u %02u:%02u:%02u is %10"PRIu32" seconds since 1/1/2010\r\n", ptm->tm_year + 1900, ptm->tm_mon + 1, ptm->tm_mday, ptm->tm_hour, ptm->tm_min, ptm->tm_sec, rawtime - 1262304000); // CCS ccs_time_t unixTime; ccs_struct_tm nTime; nTime.tm_year = ptm->tm_year; // years since 1900 nTime.tm_mon = ptm->tm_mon; // months since January (0-11) nTime.tm_mday = ptm->tm_mday; // day of the month (1-31) nTime.tm_hour = ptm->tm_hour; // hours since midnight (0-23) nTime.tm_min = ptm->tm_min; // minutes after the hour (0-59) nTime.tm_sec = ptm->tm_sec; // seconds after the minute (0-61) leap second! nTime.tm_wday = ptm->tm_wday; // days since Sunday nTime.tm_yday = ptm->tm_yday; // days since January 1 unixTime = ccs_mktime (&nTime); printf ("CCS: %04u-%02u-%02u %02u:%02u:%02u is %10"PRIu32" seconds since 1/1/1970\r\n", nTime.tm_year + 1900, nTime.tm_mon + 1, nTime.tm_mday, nTime.tm_hour, nTime.tm_min, nTime.tm_sec, unixTime + SECOFFSET); #if defined(TIME_T_USES_2010) printf ("CCS: %04u-%02u-%02u %02u:%02u:%02u is %10"PRIu32" seconds since 1/1/2010\r\n", nTime.tm_year + 1900, nTime.tm_mon + 1, nTime.tm_mday, nTime.tm_hour, nTime.tm_min, nTime.tm_sec, unixTime); #endif return 0; }