Compilare: user.cpp: In function ‘void Ways(int, int, int)’: user.cpp:50:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j,k,inc,sf,x0,y0,x,y; ^ user.cpp:50:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,k,inc,sf,x0,y0,x,y; ^ user.cpp: In function ‘int main()’: user.cpp:112:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,op,x0,y0,x1,y1,x,y,time; ^ user.cpp:109:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poarta.in","r",stdin); ^ user.cpp:110:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poarta.out","w",stdout); ^ user.cpp:114:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&N,&M,&K); ^ user.cpp:115:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d",&x0,&y0,&x1,&y1); ^ user.cpp:118:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&x,&y); ^