Compilare: main.cpp: In function 'int main()': main.cpp:11:32: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(a + 1, MAXN + 5, fin); ^ main.cpp:12:32: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(b + 1, MAXN + 5, fin); ^