Compilare: main.cpp: In function 'int main()': main.cpp:31:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=n-1; i>=1; i-=2) ^~~ main.cpp:38:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' cout << p <<" "<< a[i] - (sum ^ a[p]); ^~~~