Compilare: user.cpp: In function ‘void solve()’: user.cpp:22:46: warning: operation on ‘poz2’ may be undefined [-Wsequence-point] printf("%d %d\n", ++poz2, ++poz2); ^ user.cpp:26:57: warning: operation on ‘poz1’ may be undefined [-Wsequence-point] printf("%d %d %d\n", ++poz1, ++poz1, ++poz1); ^ user.cpp:26:57: warning: operation on ‘poz1’ may be undefined [-Wsequence-point] user.cpp: In function ‘int main()’: user.cpp:31:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trenul.in","r",stdin); ^ user.cpp:32:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trenul.out","w",stdout); ^ user.cpp: In function ‘void read()’: user.cpp:9:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:12:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&tip[i]); ^