Compilare: user.cpp: In function ‘int main()’: user.cpp:15:37: warning: unused variable ‘j’ [-Wunused-variable] int startx,starty,stopx,stopy,i,j,n,m,x,y; ^ user.cpp:26:9: warning: unused variable ‘prim’ [-Wunused-variable] int prim=0, ultim=1, h=1, nr=2, contor=1, xx, yy, ultimf; ^ user.cpp:26:17: warning: unused variable ‘ultim’ [-Wunused-variable] int prim=0, ultim=1, h=1, nr=2, contor=1, xx, yy, ultimf; ^ user.cpp:26:31: warning: unused variable ‘nr’ [-Wunused-variable] int prim=0, ultim=1, h=1, nr=2, contor=1, xx, yy, ultimf; ^ user.cpp:26:55: warning: unused variable ‘ultimf’ [-Wunused-variable] int prim=0, ultim=1, h=1, nr=2, contor=1, xx, yy, ultimf; ^ user.cpp:19:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d\n",&n,&m); ^ user.cpp:22:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d\n",&x,&y); ^ user.cpp:25:61: 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); ^