Compilare: main.cpp: In function 'int eval(int, int)': main.cpp:37:13: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=st; i<=dr; i++) ^~~ main.cpp:39:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' return nr; ^~~~~~ main.cpp:56:1: warning: control reaches end of non-void function [-Wreturn-type] } ^