Compilare: user.cpp: In function ‘int main()’: user.cpp:14:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&n,&m); ^ user.cpp:23:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin," %[^\n]",q); ^ user.cpp:40:27: warning: ‘db’ may be used uninitialized in this function [-Wmaybe-uninitialized] w[da][db]=99999999; ^ user.cpp:40:27: warning: ‘da’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:39:20: warning: ‘pb’ may be used uninitialized in this function [-Wmaybe-uninitialized] w[pa][pb]=0; ^ user.cpp:39:20: warning: ‘pa’ may be used uninitialized in this function [-Wmaybe-uninitialized]