Compilare: user.cpp: In function ‘int main()’: user.cpp:22:32: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[15]’ [-Wformat=] fscanf(is, "%s", &s); ^ user.cpp:13:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(is, "%d", &t); ^ user.cpp:19:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(is, "%d", &n); ^ user.cpp:22:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(is, "%s", &s); ^