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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int tab[] = {1,2,3,4,5,6,7};
  6.  
  7. 	for (int i = 0; i < 7; i+= 2) {
  8. 		int tmp = tab[i];
  9. 		tab[i] = tab[i+1];
  10. 		tab[i+1] = tmp;
  11. 	}
  12.  
  13. 	for (int i = 0; i < 7; i++) {
  14. 		cout << tab[i] << " ";
  15. 	}
  16.  
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 3468KB
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stdin
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Standard input is empty
stdout
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2 1 4 3 6 5 1
https://ideone.com/GNfn8C
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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