Compilare: user.cpp: In function ‘void citire()’: user.cpp:28:13: warning: unused variable ‘tmp_poz_min’ [-Wunused-variable] int tmp_poz_min; ^ user.cpp:30:14: warning: unused variable ‘ok’ [-Wunused-variable] bool ok = false; ^ user.cpp:11:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n",&n,&m); ^ user.cpp:15:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",&mat[0][i]); ^ user.cpp:34:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",&mat[rand][j]); ^ user.cpp: In function ‘int main()’: user.cpp:61:36: 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); ^ user.cpp:62:38: 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); ^ user.cpp: In function ‘void citire()’: user.cpp:48:35: warning: ‘poz_min’ may be used uninitialized in this function [-Wmaybe-uninitialized] suma += mat[!rand][poz_min]; ^