C Programming Exercises, Practice, Solution : Date Time

Last update on March 20 2025 12:31:56 (UTC/GMT +8 hours)

This resource offers a total of 50 C Date Time problems for practice. It includes 10 main exercises, each accompanied by solutions, detailed explanations, and four related problems

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1. Current DateTime Print

Write a program in C to print the current date and time.

Expected Output :

The Current date and time is : Thu Aug 03 13:38:58 2017

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2. Seconds Since Month Start

Write a program in C to compute the number of seconds passed since the beginning of the month.

Expected Output :

 222084 seconds passed since the beginning of the month.

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3. time_t to Textual Representation

Write a program in C to convert a time_t object to a textual representation.

Expected Output :

Thu Aug 03 13:44:49 2017

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4. tm Object Custom Text Format

Write a program in C to convert a tm object to a custom textual representation.

Expected Output :

 The textual representation of specified date and time :                                                                      
September Sun Sep  2 16:30:32 2016 pm                                                                                         
September Sun Sep  2 16:30:32 2016 pm

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5. tm Object to Wide String

Write a program in C to convert a tm object to a custom wide string textual representation.

Expected Output :

 The textual representation of specified date and time :

Sunday 09/02/16 17:51:10
Sunday 09/02/16 17:51:10

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6. time_t to UTC Calendar Time

Write a program in C to convert a time_t object to calendar time expressed as Coordinated Universal Time.

Expected Output :

The calendar time expressed as Coordinated Universal Time is :
UTC:   Thu Aug 03 10:53:03 2017
local: Thu Aug 03 16:23:03 2017

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7. time_t to Local Calendar Time

Write a program in C to convert a time_t object to calendar time expressed as local time.

Expected Output :

The calendar time expressed as a local Time is :
UTC:   Thu Aug 03 11:15:59 2017
local: Thu Aug 03 16:45:59 2017

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8. Date and Time 24 Months Ago

Write a program in C to print the date and time before 24 months.

Expected Output :

Today is :          Thu Aug  3 17:27:16 2017                                                                                  
(DST is not in effect)                                                                                                        
                                                                                                                              
24 months ago the date was : Mon Aug  3 17:27:16 2015                                                                         
(DST was not in effect)

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9. First Calendar Time Display

Write a program in C to show the first of calendar time.

Expected Output :

Sun Jan 01 00:00:00 1900

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10. Start of the Epoch Display

Write a program in C to show the start of the epoch.

Note : epoch means the beginning of a period in the history of someone.

Expected Output :

0 seconds since the epoch began
Thu Jan 01 00:00:00 1970

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C Programming Code Editor:

More to Come !

Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.

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