Compilare: user.cpp: In function ‘int main()’: user.cpp:15:26: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[20]’ [-Wformat=] fscanf(in, "%s", &s[j]); ^ user.cpp:9:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &T); ^ user.cpp:13:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &N); ^ user.cpp:15:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%s", &s[j]); ^