Eroare de compilare: user.c: In function ‘main’: user.c:14:15: error: ‘n’ undeclared (first use in this function) for(i=0;i<n;i++){ ^ user.c:14:15: note: each undeclared identifier is reported only once for each function it appears in user.c:8:21: warning: unused variable ‘l’ [-Wunused-variable] int i,j,x,y,z,k,l,x1,y1,z1,k1,T; ^ user.c:8:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,x,y,z,k,l,x1,y1,z1,k1,T; ^ user.c:12:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &T); ^ user.c:15:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d %d",&x,&y,&z,&k); ^ user.c:16:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d %d",&x1,&y1,&z1,&k1); ^