Compilare: main.cpp: In function 'long long int comb(long long int, long long int)': main.cpp:31:8: warning: unused variable 'i' [-Wunused-variable] ll i; ^ main.cpp: In function 'int main()': main.cpp:48:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(num) ^~ main.cpp:50:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' num=0; ^~~