Compilare: user.cpp: In function ‘int main()’: user.cpp:36:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[10000005]’ [-Wformat=] scanf("%s" , &prop); ^ user.cpp:43:29: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[50]’ [-Wformat=] while (scanf("%s" , &cuv) != EOF) { ^ user.cpp:56:9: warning: unused variable ‘P1’ [-Wunused-variable] int P1 = 1, hash1 = 0; ^ user.cpp:33:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("abc2.in" , "r" , stdin); ^ user.cpp:34:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("abc2.out" , "w" , stdout); ^ user.cpp:36:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s" , &prop); ^