C Exercises: Compute the number of seconds passed since the beginning of the month
C Date Time: Exercise-2 with Solution
Write a program in C to compute the number of seconds passed since the beginning of the month.
Sample Solution:
C Code:
#include <stdio.h>
#include <time.h>
int main(void)
{
time_t now;
time(&now);
struct tm beg_month;
beg_month = *localtime(&now);
beg_month.tm_hour = 0;
beg_month.tm_min = 0;
beg_month.tm_sec = 0;
beg_month.tm_mday = 1;
double seconds = difftime(now, mktime(&beg_month));
printf("\n %.f seconds passed since the beginning of the month.\n\n", seconds);
return 0;
}
Sample Output:
222084 seconds passed since the beginning of the month.
N.B.: The result may varry for your current system date and time.
Flowchart:
C Programming Code Editor:
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Previous: Write a program in C to print the current date and time.
Next: Write a program in C to convert a time_t object to a textual representation.
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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