Compilare: main.cpp: In function 'int main()': main.cpp:14:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sir.size(); ++i) { ~~^~~~~~~~~~~~ main.cpp:10:23: warning: unused variable 'i' [-Wunused-variable] int repetari = 0, i = 0; ^ main.cpp:12:10: warning: 'caracter' may be used uninitialized in this function [-Wmaybe-uninitialized] char caracter; ^~~~~~~~