Compilare: main.cpp: In function 'int main()': main.cpp:30:17: warning: variable 'poz2' set but not used [-Wunused-but-set-variable] int poz,poz2; ^~~~ main.cpp:11:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("lacusta.in","r",stdin); ^ main.cpp:12:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("lacusta.out","w",stdout); ^ main.cpp:15:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ main.cpp:19:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i][j]); ^ main.cpp:47:13: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] if(j!=poz) ^~