Compilare: user.cpp: In function ‘int main()’: user.cpp:121:28: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[21]’ [-Wformat=] fscanf(fin,"%s",&ch); ^ user.cpp:120:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&type); ^ user.cpp:121:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",&ch); ^