View Compilation Error

0_0_23247245_27906.cpp: In function 'int main()':
0_0_23247245_27906.cpp:7:16: error: 'sacnf' was not declared in this scope
   sacnf("%d",&n);
                ^
0_0_23247245_27906.cpp:11:3: error: 'b' was not declared in this scope
   b[i]=a[i];
   ^
0_0_23247245_27906.cpp:12:3: error: 'c' was not declared in this scope
   c[i]++;
   ^