Compilare: user.cpp:2:13: warning: ISO C99 requires whitespace after the macro name [enabled by default] #define secv{fscanf(f,"%d",&x);while(pq<=uq && x<=q[uq][0])uq--;q[++uq][0]=x;q[uq][1]=i;} ^ user.cpp: In function ‘int main()’: user.cpp:9:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&k); ^ user.cpp:2:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] #define secv{fscanf(f,"%d",&x);while(pq<=uq && x<=q[uq][0])uq--;q[++uq][0]=x;q[uq][1]=i;} ^ user.cpp:11:17: note: in expansion of macro ‘secv’ secv; ^ user.cpp:2:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] #define secv{fscanf(f,"%d",&x);while(pq<=uq && x<=q[uq][0])uq--;q[++uq][0]=x;q[uq][1]=i;} ^ user.cpp:16:9: note: in expansion of macro ‘secv’ secv; ^