Compilare: main.cpp: In function 'int main()': main.cpp:23:40: warning: unused variable 'maxim' [-Wunused-variable] int i,j,si,sj,fi,fj,l,c,first,last,maxim=-1,st,dr,poz=-1,mij; ^~~~~ main.cpp:21:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("barbar.in","r",stdin); ^ main.cpp:22:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("barbar.out","w",stdout); ^ main.cpp:81:12: warning: 'fj' may be used uninitialized in this function [-Wmaybe-uninitialized] dr=mini(minime[fi][fj],minime[si][sj]); ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:81:12: warning: 'fi' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:81:12: warning: 'sj' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:81:12: warning: 'si' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:95:101: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized] if(verif(l+dl[k],c+dc[k]) && minime[l+dl[k]][c+dc[k]]>=mij && b[i][j]==0 && mat[i][j]!=-1) ~~~~~~~~^