Compilare: main.cpp: In function 'int main()': main.cpp:54:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < s.size(); i++) { ~~^~~~~~~~~~ main.cpp:66:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (lcount + x.size() + line.size() > n) { ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ main.cpp:43:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("text4.in", "r", stdin); ^ main.cpp:44:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("text4.out", "w", stdout); ^