Compilare: main.cpp: In function 'int main()': main.cpp:17:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<=b-1; i++) ~^~~~~ main.cpp:17:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for (i=1; i<=b-1; i++) ^~~ main.cpp:19:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' aux=aux*a; ^~~ main.cpp:23:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<=b; i++) ~^~~