Compilare: user.cpp: In function ‘int main()’: user.cpp:35:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&n); ^ user.cpp:37:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d" ,&rx[i],&ry[i]); ^ user.cpp:38:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&m); ^ user.cpp:42:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d" ,&Z[i].x,&Z[i].y); ^ user.cpp:25:23: warning: ‘coord’ may be used uninitialized in this function [-Wmaybe-uninitialized] Int[n_int].val=val; ^ user.cpp:32:47: note: ‘coord’ was declared here int i,n,j,m,n_int,a,x,val,max,mindx,mindy,coord; ^