View Compilation Error

0_0_38465234_29656.cpp: In function 'int main()':
0_0_38465234_29656.cpp:3:15: error: 'scanf' was not declared in this scope
  scanf("%d",&t);
               ^
0_0_38465234_29656.cpp:8:22: error: 'printf' was not declared in this scope
    printf("%d ",b*i-n);
                      ^
0_0_38465234_29656.cpp:11:18: error: 'printf' was not declared in this scope
   printf("%d\n",i);
                  ^