Compilare: main.cpp: In function 'int main()': main.cpp:22:28: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(t, sizeof t, fin); ^ main.cpp:23:28: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(s, sizeof s, fin); ^