View Compilation Error

0_0_31205784_5917.cpp:19:1: error: stray '\' in program
 printf(%d\n",f[n]);
 ^
0_0_31205784_5917.cpp:19:1: error: missing terminating " character
0_0_31205784_5917.cpp:3:1: error: expected constructor, destructor, or type conversion before 'int'
 int a,b,k;
 ^
0_0_31205784_5917.cpp:5:1: error: expected unqualified-id before 'while'
 while(~scanf("%d%d%d",&a,&b,&n))
 ^