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  1. #include <stdlib.h>
  2. #include <stdio.h>
  3. #include <string.h>
  4.  
  5. int main() {
  6. 	int decimal;
  7. 	printf("Digite um número em base decimal: ");
  8. 	scanf("%d", &decimal);
  9. 	int counter = 1;
  10. 	char *binary = NULL;
  11. 	while (decimal >= 1) {
  12. 		int q = decimal / 2;
  13. 		int r = decimal - (q * 2);
  14. 		char *aux = malloc(counter);
  15. 		if (binary != NULL) {
  16. 			memcpy(aux, binary, counter - 1);
  17. 			free(binary);
  18. 		}
  19. 		binary = aux;
  20. 		if (r == 0) binary[counter-1] = '0';
  21. 		else binary[counter-1] = '1';
  22. 		counter++;
  23. 		decimal = q;
  24. 	}
  25. 	printf("Resultado em binário = ");
  26. 	for (int i = counter - 1; i >= 0; i--) printf("%c", binary[i]);
  27. 	printf("\n");
  28. 	free(binary);
  29. }
  30.  
  31. //https://pt.stackoverflow.com/q/58696/101
Success #stdin #stdout 0s 4560KB
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Digite um número em base decimal: Resultado em binário = 1110
https://ideone.com/COtJAP
language:
C99 (gcc 8.3)
created:
6 years ago
visibility:
public

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