#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define YEAR 0
#define MONTH 1
#define DAY 2
#define HOUR 3
#define MINUTE 4
#define SECOND 5
//the maximum value of each time region
int limit[] = {0,12,-1,23,59,59};
void nextTime(int time[], int timeRegion, int increment);
int main(int argc, char **argv){
char *current = malloc(20);
strcpy(current, "2004-11-30-23-59-59");
//parsing for the values
char *token = strtok(current,"-");
int i = 0;
int time[6];
do{
time[i] = atoi(token);
printf("%d\t",time[i]);
token = strtok(NULL,"-");
i++;
}while(token);
printf("\n");
//compute for the next second
nextTime(time,SECOND,1);
for(i=0;i<6;i++){
printf("%d\t",time[i]);
}
getchar();
}
/*recursively compute the next value for second, mins....
*/
void nextTime(int time[], int timeRegion, int increment){
switch(timeRegion){
//month
case DAY:
if(increment){
if(time[MONTH] == 2){
if(time[YEAR]%4 == 0){
//28 days
increment = (time[DAY] == 28)?1:0;
time[DAY] = time[DAY]+1-increment*28;
}
else{
//29 days in this month
increment = (time[DAY] == 29)?1:0;
time[DAY] = time[DAY]+1-increment*29;
}
}
else{
if((time[MONTH]+time[MONTH]/8)%2 == 1){
increment = (time[DAY] == 31)?1:0;
time[DAY] = time[DAY]+1-increment*31;
}
else{
increment = (time[DAY] == 30)?1:0;
time[DAY] = time[DAY]+1-increment*30;
}
}
}
break;
default:
if(increment){
increment = (time[timeRegion] == limit[timeRegion])?1:0;
time[timeRegion] = time[timeRegion]+1 ;
if(timeRegion == YEAR){
return;
}
else{
nextTime(time, timeRegion-1, increment);
}
}
if(timeRegion != MONTH){
time[timeRegion] -= increment*(limit[timeRegion]+1);
}
else{
time[timeRegion] -= increment*(limit[timeRegion]);
}
}
break;
}
