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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. int timestr2sec(char *c) {
  5. 	int i, a, n;
  6. 	int len, offset;
  7.  
  8. 	len = strlen(c);
  9. 	offset = len - 8;
  10.  
  11. 	n = (int)(c[7 + offset] - '0') + 
  12. 	    (int)((c[6 + offset] - '0') * 10) +
  13. 	    (int)((c[4 + offset] - '0') * 60) +
  14. 	    (int)((c[3 + offset] - '0') * 600) + 
  15. 	    (int)((c[1 + offset] - '0') * 3600) +
  16. 	    (int)((c[0 + offset] - '0') * 36000);
  17. 	a = 360000;
  18. 	for (i = offset - 1; i >= 0; i--) {
  19. 		n += (int)((c[i] - '0') * a);
  20. 		a *= 10;
  21. 	}
  22. 	return n;
  23. }
  24.  
  25. int main(void) {
  26. 	// your code goes here
  27. 	char *t1 = "01:23:45";
  28. 	char *t2 = "333:33:33";
  29. 	char *t3 = "99:59:59";
  30. 	char *t4 = "1000:00:00";
  31.  
  32. 	printf("%s = %d sec\n", t1, timestr2sec(t1));
  33. 	printf("%s = %d sec\n", t2, timestr2sec(t2));
  34. 	printf("%s = %d sec\n", t3, timestr2sec(t3));
  35. 	printf("%s = %d sec\n", t4, timestr2sec(t4));
  36.  
  37. 	return 0;
  38. }
  39.  
Success #stdin #stdout 0s 4488KB
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stdin
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Standard input is empty
stdout
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01:23:45 = 5025 sec
333:33:33 = 1200813 sec
99:59:59 = 359999 sec
1000:00:00 = 3600000 sec
https://ideone.com/pnrcQ6
language:
C (gcc 8.3)
created:
7 years ago
visibility:
secret

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