Compilare: main.cpp: In function 'int main()': main.cpp:57:9: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:59:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' n--; ^ main.cpp:47:12: warning: unused variable 'i' [-Wunused-variable] int n, i, k, nr; ^