View Compilation Error

0_0_34345979_12355.c: In function 'main':
0_0_34345979_12355.c:5:3: error: expected identifier or '(' before 'float'
   float k;
   ^
0_0_34345979_12355.c:16:21: error: 'k' undeclared (first use in this function)
         scanf("%f",&k);
                     ^
0_0_34345979_12355.c:16:21: note: each undeclared identifier is reported only once for each function it appears in