Compilare: main.cpp: In function 'int main()': main.cpp:31:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=2;i<=n;i=i+2) ^~~ main.cpp:33:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' out << cnt; ^~~