Compilare: main.cpp: In function 'std::vector<std::__cxx11::basic_string<char> > splitText(std::__cxx11::string)': main.cpp:12:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < input.length(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:31:6: warning: unused variable 'matrice' [-Wunused-variable] int matrice[20][20]; ^~~~~~~ main.cpp:57:17: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result] system("pause"); ^