View Compilation Error

0_0_17520374_12701.cpp: In function 'int main()':
0_0_17520374_12701.cpp:8:4: error: expected primary-expression before 'else'
    else
    ^
0_0_17520374_12701.cpp:9:35: error: expected '}' at end of input
    printf("%.3f\n",4*PI*r*r*r/3.0);
                                   ^