Compilare: main.cpp: In function 'int main()': main.cpp:16:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=0; i<30; ++i) ^~~ main.cpp:18:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' int x=0; ^~~ main.cpp:56:25: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(sum&1!=1) ~^~~