Help me please!!!

This is a discussion on Help me please!!! within the C Programming forums, part of the General Programming Boards category; 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 ...

  1. #1
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    Help me please!!!

    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) .

    Code:
    #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);
    }

  2. #2
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    Without knowing the actual starting time there is no way of knowing the time of day.

    Jim

  3. #3
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    Quote Originally Posted by jimblumberg View Post
    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.

  4. #4
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    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

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    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.

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    Quote Originally Posted by anduril462 View Post
    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.

  7. #7
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    Code:
    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.

  8. #8
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    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.

  9. #9
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    Quote Originally Posted by nonoob View Post
    Code:
    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]

  10. #10
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    How would you go about adding this? I suggest you read the previous posts and try to implement a solution.

    Jim

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