Compilare: user.cpp: In function ‘int main()’: user.cpp:72:20: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[100100]’ [-Wformat=] scanf("%s", &sir1); ^ user.cpp:73:20: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[100100]’ [-Wformat=] scanf("%s", &sir2); ^ user.cpp:79:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < strlen(sir1); ++i) { ^ user.cpp:67:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joben.in", "r", stdin); ^ user.cpp:68:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joben.out", "w", stdout); ^ user.cpp:70:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &T); ^ user.cpp:72:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", &sir1); ^ user.cpp:73:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", &sir2); ^