- #include <stdio.h> 
-   
- long binario(int num) { 
- 	if (num == 0) return 0; 
- 	return (num % 2) + 10 * binario(num / 2); 
- } 
-   
- int main() { 
- } 
-   
- //https://pt.stackoverflow.com/q/184447/101 
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