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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. #define INCREMENT_SIZE 10
  5.  
  6. int main(void) {
  7. 	char* buffer = (char*)malloc(sizeof(INCREMENT_SIZE + 1));
  8. 	char* current = buffer;
  9. 	char ch;
  10. 	int length = 0;
  11. 	int maxLength = strlen(buffer);
  12.  
  13. 	while (1)
  14. 	{
  15. 		ch = getchar();
  16. 		if (ch == '\n')
  17. 			break;
  18.  
  19. 		if (++length >= maxLength)
  20. 		{
  21. 			char* newBuffer = realloc(buffer, maxLength + INCREMENT_SIZE);
  22.  
  23. 			if (newBuffer == NULL) 
  24. 			{
  25. 				free(buffer);
  26. 				return 0;
  27. 			}
  28.  
  29. 			maxLength += INCREMENT_SIZE;
  30. 			current = newBuffer + (current - buffer);
  31. 			buffer = newBuffer;
  32. 		}
  33.  
  34. 		*current++ = ch;
  35. 	}
  36.  
  37. 	*current = '\0';
  38. 	printf("%s\n", buffer);
  39. 	printf("%d\n", strlen(buffer));
  40.  
  41. 	return 0;
  42. }
  43.  
Success #stdin #stdout 0s 2428KB
comments (?)
stdin
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123456789012345678901234567890456789
stdout
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123456789012345678901234567890456789
36
https://ideone.com/H1AsjL
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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