Good day Sir/Ma'am,
Just want to ask if you can help me with this one, and please can you provide me a sample code on how to do this [b]in C language:[/b]
[b]
If an employee input a data like this:[/b]
--------------------------------------------------
Enter Time-in: [b]08:00[/b]
Enter Time-out: [b]17:01[/b]
Total No. of Working Hours: [b]8 hours[/b]
--------------------------------------------------
How will i do this in C language using time.h?
[b]Thanks a lot....[/b]
Comments
#include
#include
#include
#include
void main()
{
char stb[1025];
char ste[1025];
char sh[3],sm[3];
tm rtb,rte;
time_t ttb,tte,ttr;
long qh,qm;
printf("Enter Time-in: ");scanf("%s",stb);
printf("Enter Time-out: ");scanf("%s",ste);
rtb.tm_year=111;rtb.tm_mon=0;rtb.tm_mday=1;rtb.tm_sec=0;
strncpy(sh,stb,2);sh[2]='';
strncpy(sm,stb+3,2);sm[2]='';
rtb.tm_hour=atoi(sh);
rtb.tm_min=atoi(sm);
rte.tm_year=111;rte.tm_mon=0;rte.tm_mday=1;rte.tm_sec=0;
strncpy(sh,ste,2);sh[2]='';
strncpy(sm,ste+3,2);sm[2]='';
rte.tm_hour=atoi(sh);
rte.tm_min=atoi(sm);
ttb=mktime(&rtb);
tte=mktime(&rte);
ttr=difftime(tte,ttb);
qm=ttr/60;
qh=qm/60;
if(qh)
qm=qm%(qh*60);
printf("Total No. of Working Hours: %02d:%02d
",qh,qm);
}
BUT i receive this error when i run your code, this is the Error:
Undefined symbol 'mktime' in module
hope you could help me with this one...
thanks a lot sir!
thanks a lot for your post, its working now, i already found the problem, i use Turbo C++ 3.0 and now its working....
thanks a lot again sir!
By the way sir, i have a question:
First Question:
---------------------------------------
[b]why did you add +3 on stb?[/b]
[b][color=Green]strncpy(sm,stb+3,2);[/color] [/b]
---------------------------------------
Second Question:
---------------------------------------
[b]and what is this for?[/b]
[b][color=Green]sm[2]=' ';[/color] [/b]
---------------------------------------
[b]Thank you very much Sir![/b]
HH:MM
, so if we count from 0, MM begins from 3-rd symbol.
[b]sm[2]=' ';[/b] is because functions like atoi(...) work with null-terminated strings.
Thank you very much for your kind reply! I really appreciated it![/b]
Sir i have another problem, the code is working except in the part of minutes like this:
Enter Time-in: 8:00
Enter Time-out: 17:00
Total No. of Working Hours: 9:00 hours
the above is correct but when I Enter a data like this:
Enter Time-in: 8:[color=Red]15[/color]
Enter Time-out: 17:00
Total No. of Working Hours: [b][color=Green]7:00 hours[/color][/b]
which is I think Wrong... it has to be [color=Red]8:45 hours (9hrs - 15minutes = 8:45 hours)[/color]
Hope you can help me on this one too sir...
[b]Thank you very much again Sir![/b]