Compilare: user.c: In function ‘main’: user.c:5:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen( "pba.in" , "r" , stdin ); ^ user.c:6:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen( "pba.out" , "w" , stdout ); ^ user.c:7:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d" , &n ); ^ user.c:9:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d" , &a[i] ); ^ user.c:21:30: warning: ‘Max3’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf( "%d" , (Max1*Max2*Max3)%1000000007 ); ^ user.c:21:25: warning: ‘Max2’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf( "%d" , (Max1*Max2*Max3)%1000000007 ); ^ user.c:21:25: warning: ‘Max1’ may be used uninitialized in this function [-Wmaybe-uninitialized]