Compilare: user.cpp: In function ‘int main()’: user.cpp:64:48: warning: statement has no effect [-Wunused-value] r[tempnew.x][tempnew.y]==r[temp.x][temp.y]+1; ^ user.cpp:22:24: warning: variable ‘y2’ set but not used [-Wunused-but-set-variable] short int x1,x2,y1,y2,n,m,i,c,k,minim; ^ user.cpp:20:31: 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:21:33: 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:24:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%hd%hd\n",&n,&m); ^ user.cpp:28:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&x); ^ user.cpp:51:13: warning: ‘y1’ may be used uninitialized in this function [-Wmaybe-uninitialized] r[x1][y1]=1; ^ user.cpp:51:13: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:69:14: warning: ‘x2’ may be used uninitialized in this function [-Wmaybe-uninitialized] temp.x=x2;temp.y=y1; ^