Compilare: user.cpp: In function ‘int main()’: user.cpp:21:2: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(i=1;i<=n;i++) ^~~ user.cpp:23:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ sort(v+1,v+n+1,cmp); ^~~~ user.cpp:56:2: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(i=1;i<=n;i++) ^~~ user.cpp:58:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ printf("%d\n",nmax); ^~~~~~ user.cpp:17:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("concert.in","r",stdin); ^ user.cpp:18:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("concert.out","w",stdout); ^ user.cpp:20:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:22:62: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d",&v[i].x,&v[i].y,&v[i].z,&v[i].t,&v[i].p); ^