Compilare: user.cpp: In function ‘void Minim(int, int, int&, int&)’: user.cpp:13:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(b[l][k]<Min) ^ user.cpp:18:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(b[l][k]<Minapr) Minapr=b[l][k]; ^ user.cpp: In function ‘int main()’: user.cpp:37:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(b[i-1][j]!=Min) ^ user.cpp:22:36: 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:23:38: 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:25:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n",&m,&n); ^ user.cpp:28:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",&a[i][j]); ^