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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. char* delete_doubles(const char *input)
  5. {
  6.     //create a result string
  7. 	static char dresult[128];
  8. 	memset(dresult, 0, sizeof(dresult));
  9.  
  10. 	int i, result_pos = 0;
  11.  
  12. 	//create a for loop that handles every single sign of input
  13. 	for(i = 0; i < strlen(input); i++)
  14. 	{
  15. 		//if the result string does not contain the current sign yet
  16. 		if(strchr(dresult, input[i]) == NULL)
  17. 		{
  18. 			//add the current sign to the result
  19. 			dresult[result_pos] = input[i];
  20. 			result_pos++;
  21. 		}
  22. 	//end of for loop
  23. 	}
  24.  
  25. 	//return result
  26. 	return dresult;
  27. }
  28.  
  29. int main()
  30. {
  31. 	printf("1: %s\n", delete_doubles("cool-umbrella"));
  32. 	printf("2: %s\n", delete_doubles("Alle Meine Entchen"));
  33. 	printf("3: %s\n", delete_doubles("Ich gehe eine Strasse entlang"));
  34. 	printf("4: %s\n", delete_doubles("aaaaaaabbbccccddddeeeffgggghhhhaaaaabbbdddddjjjjlllkkii1222    3323jjjppppoooaaabb"));
  35.  
  36. 	return 0;
  37. }
Success #stdin #stdout 0.02s 1676KB
comments (?)
stdin
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Standard input is empty
stdout
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1: col-umbrea
2: Ale MinEtch
3: Ich geinStrasl
4: abcdefghjlki12 3po
https://ideone.com/tiuW1a
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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