Compilare: user.cpp: In function ‘int main()’: user.cpp:30:31: warning: unused variable ‘ps’ [-Wunused-variable] int d1,d2,o1,o2,i,j,lf,cf,ps=1,pi=0,mi=999999999; ^ user.cpp:34:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&m,&n); ^ user.cpp:98:17: warning: ‘cf’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(om[lf][cf]!=0) ^ user.cpp:98:17: warning: ‘lf’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:79:17: warning: ‘o2’ may be used uninitialized in this function [-Wmaybe-uninitialized] om[o1][o2]=1; ^ user.cpp:79:17: warning: ‘o1’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:106:22: warning: ‘d2’ may be used uninitialized in this function [-Wmaybe-uninitialized] def[d1][d2]=1; ^ user.cpp:106:22: warning: ‘d1’ may be used uninitialized in this function [-Wmaybe-uninitialized]