Compilare: user.cpp: In function ‘int main()’: user.cpp:19:28: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[255]’ [-Wformat=] fscanf (fin,"%s",&v); ^ user.cpp:17:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin ,"%d",&n); ^ user.cpp:19:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%s",&v); ^