Compilare: main.cpp: In function 'int main()': main.cpp:27:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i =0; i<n; i++) ^~~ main.cpp:31:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(int j=n-1, i=0; j>=0, i<n; j--,i++) ^~~ main.cpp:31:31: warning: left operand of comma operator has no effect [-Wunused-value] for(int j=n-1, i=0; j>=0, i<n; j--,i++) ~^~~