Compilare: main.cpp: In function 'int main()': main.cpp:32:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] in >> s + 1; ~~^~~ main.cpp:38:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for (auto k : {'a', 'e', 'i', 'o', 'u', 'y'}) ^~~ main.cpp:41:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(i = 0; i <= l; i++) ^~~