Compilare: user.cpp: In function ‘int main()’: user.cpp:32:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rj.in","r",stdin); ^ user.cpp:33:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rj.out","w",stdout); ^ user.cpp:36:27: 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:39:16: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp:101:44: warning: ‘minj’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d %d %d\n",minim,mini+1,minj+1); ^ user.cpp:101:44: warning: ‘mini’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:18:24: warning: ‘jj’ may be used uninitialized in this function [-Wmaybe-uninitialized] coada[e++].c = val2; ^ user.cpp:35:22: note: ‘jj’ was declared here int i,j,ic,jc,ji,jj,dir; ^ user.cpp:17:22: warning: ‘ji’ may be used uninitialized in this function [-Wmaybe-uninitialized] coada[e].l = val1; ^ user.cpp:35:19: note: ‘ji’ was declared here int i,j,ic,jc,ji,jj,dir; ^ /tmp/ccsZb4vw.o: In function `main': user.cpp:(.text.startup+0xac): warning: the `gets' function is dangerous and should not be used.