Compilare: user.cpp: In function ‘int main()’: user.cpp:39:21: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[200]’ [-Wformat=] fscanf(f, "%s", &s); ^ user.cpp:34:15: warning: unused variable ‘ch’ [-Wunused-variable] char s[200], ch; ^ user.cpp:35:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &t); ^ user.cpp:39:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", &s); ^