Compilare: main.cpp: In function 'int main()': main.cpp:275:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int z = 0; z < dragoni.size(); z++) ~~^~~~~~~~~~~~~~~~ main.cpp:326:18: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result] system("pause"); ^ main.cpp:356:17: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result] system("pause"); ^