View Compilation Error

0_0_34345950_488.cpp: In function 'int main()':
0_0_34345950_488.cpp:5:3: error: expected unqualified-id before 'float'
   float k;
   ^
0_0_34345950_488.cpp:16:21: error: 'k' was not declared in this scope
         scanf("%f",&k);
                     ^