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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int  p[] = {1,2,3};
  6. 	int pLen = sizeof(p)/sizeof(*p);
  7.  
  8. 	cout << pLen << endl;
  9.  
  10. 	int *q =  (int *) malloc(pLen * sizeof(int));
  11.  
  12. 	for(int i = 0, j = 0; j < pLen; i += 2, j++) {
  13. 		q[i] =  p[j];
  14. 		q[i+1] = p[j];
  15.  
  16. 		// cout << i << " "<< j <<" " <<q[i] << q[i+1]; 
  17. 	}
  18.  
  19. 	for(int i = 0; i < pLen*2; i++) {
  20. 		cout << q[i] << " ";
  21. 	}
  22. 	return 0;
  23. }
Success #stdin #stdout 0s 3272KB
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stdin
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Standard input is empty
stdout
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3
1 1 2 2 3 3
https://ideone.com/rJlVjR
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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