Compilare: user.cpp: In function ‘int main()’: user.cpp:31:30: warning: unused variable ‘max’ [-Wunused-variable] int n,m,i,j,x1,x2,y1,y2,aux,max,rez=1,put,cc,x; ^ user.cpp:31:44: warning: unused variable ‘cc’ [-Wunused-variable] int n,m,i,j,x1,x2,y1,y2,aux,max,rez=1,put,cc,x; ^ user.cpp:31:47: warning: unused variable ‘x’ [-Wunused-variable] int n,m,i,j,x1,x2,y1,y2,aux,max,rez=1,put,cc,x; ^ user.cpp:29:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("perspic.in", "r", stdin); ^ user.cpp:30:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("perspic.out", "w", stdout); ^ user.cpp:33:23: 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:39:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&c); ^ user.cpp:41:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n",&x1,&x2); ^ user.cpp:56:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d\n",&x1,&y1,&x2,&y2); ^