View Compilation Error

0_0_26338509_21978.cpp: In function 'int main()':
0_0_26338509_21978.cpp:9:18: error: expected ')' before ';' token
         getchar(0;
                  ^
0_0_26338509_21978.cpp:10:23: error: 'PI' was not declared in this scope
         v=(double)4/3*PI*r*r*r;
                       ^