View Compilation Error

0_0_37735052_14285.cpp:2:4: error: expected unqualified-id before 'while'
    while(48<=c&&c<=57) v=(v<<3)+v+v+c-48,c=getchar();
    ^
0_0_37735052_14285.cpp:3:4: error: expected unqualified-id before 'return'
    return v*f;
    ^
0_0_37735052_14285.cpp:4:1: error: expected declaration before '}' token
 }
 ^