Help me please!!!

[hasangursoy]

I didn't find sollution:S I wrote program but I didn't indicate a.m.(a) or p.m.(p).

Write a function that gets a time in seconds as a parameter and returns the time in hours, minutes, seconds and a character indicating a.m.(a) or p.m.(p) .

#include<stdio.h>

int duration(int time,int *hour, int *minutes, int *seconds)
{
	char a,p;
	
	*hour=time/3600;
	*minutes=time%3600/60;
	*seconds=time%3600%60;
	
		
}

int main(void)
{
	int seconds,hour,min,sec;


	printf("Enter a time in seconds(<=0 stop):");
	scanf("%d",&seconds);
	
	while(seconds>0)
	{
		duration(seconds,&hour,&min,&sec);
		printf("Time is %d:%d:%d\n",hour,min,sec);
		
		
		
		printf("Enter a time in seconds(<=0 stop):");
		scanf("%d",&seconds);
		
	}
	
	
	return(0);
}

[jimblumberg]

Without knowing the actual starting time there is no way of knowing the time of day.

Jim

[hasangursoy]

Without knowing the actual starting time there is no way of knowing the time of day.

Jim

example run:
------------

Enter a time in seconds (<=0 to stop): 45930
Time is 12:45:30 a.m.


Enter a time in seconds (<=0 to stop): 65987
Time is 6:19:47 p.m.

[jimblumberg]

So your sample run knew the time of day to start with. No where in your program is there a starting time. Looking at your examples it appears that your starting time is midnight. So you need to use this fact to determine am or pm.

Jim

[anduril462]

I think he is using seconds elapsed since midnight, if I read his duration function correctly. If that's the case, hour should be a number from 0-23. If it's less than 12, it's AM, between 12 and 23 inclusive, it's PM. The only trick is that if hour comes back as 0, you need to print 12.

[hasangursoy]

I think he is using seconds elapsed since midnight, if I read his duration function correctly. If that's the case, hour should be a number from 0-23. If it's less than 12, it's AM, between 12 and 23 inclusive, it's PM. The only trick is that if hour comes back as 0, you need to print 12.

yes time>12 ----->p.m else a.m
ex: 65987 seconds /3600 >12 , its p.m else a.m but I didn't.

[nonoob]

printf("Time is %d:%02d:%02d %c.m.\n", hour, min, sec, "ap"[hour > 11]);

Note the %02d so that each has leading zero if there is only 1 digit.

[anduril462]

Do you not know how to write an if statement? Check your books and class notes. Read our tutorial and find some more on Google.

[hasangursoy]

printf("Time is %d:%02d:%02d %c.m.\n", hour, min, sec, "ap"[hour > 11]);

Note the %02d so that each has leading zero if there is only 1 digit.

thank you very much! but this part must be "ap"[hour>12]

[jimblumberg]

How would you go about adding this? I suggest you read the previous posts and try to implement a solution.

Jim