View Compilation Error

0_0_16622707_5118.cpp:3:1: error: stray '\243' in program
 int main（）
 ^
0_0_16622707_5118.cpp:3:1: error: stray '\250' in program
0_0_16622707_5118.cpp:3:1: error: stray '\243' in program
0_0_16622707_5118.cpp:3:1: error: stray '\251' in program
0_0_16622707_5118.cpp:8:4: error: stray '\243' in program
    v=4*PI*a*a*a/3；
    ^
0_0_16622707_5118.cpp:8:4: error: stray '\273' in program
0_0_16622707_5118.cpp:5:2: error: expected primary-expression before 'double'
  double a,v;
  ^
0_0_16622707_5118.cpp:5:2: error: expected '}' before 'double'
0_0_16622707_5118.cpp:5:2: error: expected ',' or ';' before 'double'
0_0_16622707_5118.cpp:6:2: error: expected unqualified-id before 'while'
  while(scanf("%lf",&a)!=EOF)
  ^
0_0_16622707_5118.cpp:11:1: error: expected unqualified-id before 'return'
 return 0;
 ^
0_0_16622707_5118.cpp:12:1: error: expected declaration before '}' token
 }
 ^