Compilare: user.cpp: In function ‘int main()’: user.cpp:67:13: warning: unused variable ‘k’ [-Wunused-variable] int n,i,k,maxx,jj,j,p; ^ user.cpp:67:20: warning: unused variable ‘jj’ [-Wunused-variable] int n,i,k,maxx,jj,j,p; ^~ user.cpp:67:25: warning: variable ‘p’ set but not used [-Wunused-but-set-variable] int n,i,k,maxx,jj,j,p; ^ user.cpp: In function ‘bool compar(int, int)’: user.cpp:63:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:65:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] { freopen("cuiburi.in", "r",stdin); ^ user.cpp:66:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuiburi.out", "w",stdout); ^ user.cpp:68:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:70:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &ob[i].t); ^ user.cpp:72:74: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &ob[i].x1, &ob[i].y1, &ob[i].x2, &ob[i].y2); ^ user.cpp:74:61: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &ob[i].x1, &ob[i].y1, &ob[i].x2); ^