Compilare: user.cpp: In function ‘int main()’: user.cpp:21:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d\n",&n,&m); ^ user.cpp:51:8: warning: ‘jc’ may be used uninitialized in this function [-Wmaybe-uninitialized] x.c=jc; ~~~^~~ user.cpp:50:8: warning: ‘ic’ may be used uninitialized in this function [-Wmaybe-uninitialized] x.l=ic; ~~~^~~