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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <stdlib.h>
  4.  
  5. void get_me_a_string(int * int_array, int array_size, char * output_string, int output_string_max_size)
  6. {
  7. 	if(!int_array || !output_string)
  8. 		return;
  9.  
  10. 	char * aux_string = NULL;
  11.  
  12. 	//Depending on the compiler int is 2-byte or 4 byte.
  13. 	//Meaning INT_MAX will be at most 2147483647 (10 characters + 1 '\0').
  14. 	aux_string = (char *) malloc(11);
  15. 	if(!aux_string)
  16. 		return;
  17.  
  18. 	int i;
  19. 	int current_array_size = 0;
  20. 	for(i = 0; i < array_size; i++)
  21. 	{
  22. 		sprintf(aux_string, "%d", int_array[i]);
  23. 		current_array_size += strlen(aux_string);
  24. 		if(current_array_size < output_string_max_size)
  25. 			strcat(output_string, aux_string);
  26. 		else
  27. 			break;
  28. 	}
  29.  
  30. 	free(aux_string);
  31. }
  32.  
  33. int main(void) {
  34. 	int a[5]={5,21,456,1,3};
  35.  
  36. 	int string_max_size = 256;
  37. 	char * string_from_array = NULL;
  38.  
  39. 	string_from_array  = (char *) malloc(string_max_size);
  40.  
  41. 	if(NULL == string_from_array)
  42. 	{
  43. 		printf("Memory allocation failed. Exiting...");
  44. 		return 1;
  45. 	}
  46.  
  47. 	memset(string_from_array, 0, string_max_size);
  48. 	get_me_a_string(a, 5, string_from_array, string_max_size);
  49.  
  50. 	printf(string_from_array);
  51.  
  52. 	free(string_from_array);
  53. 	return 0;
  54. }
  55.  
  56.  
Success #stdin #stdout 0s 2184KB
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https://ideone.com/okCaRn
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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