Compilare: user.cpp: In function ‘int main()’: user.cpp:53:9: warning: unused variable ‘n’ [-Wunused-variable] int n,i; ^ user.cpp:53:11: warning: unused variable ‘i’ [-Wunused-variable] int n,i; ^ user.cpp: In function ‘void citire()’: user.cpp:17:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&k); ^ user.cpp:20:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&x,&y); ^ user.cpp:23:58: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d %d",&startx,&starty,&stopx,&stopy); ^