View Compilation Error

0_0_16110861_18063.cpp:4:2: error: expected primary-expression before 'int'
  int M,i,m,n,t,a=0,b=0;
  ^
0_0_16110861_18063.cpp:4:2: error: expected '}' before 'int'
0_0_16110861_18063.cpp:4:2: error: expected ',' or ';' before 'int'
0_0_16110861_18063.cpp:5:7: error: expected constructor, destructor, or type conversion before '(' token
  scanf("%d",&M);
       ^
0_0_16110861_18063.cpp:6:2: error: expected unqualified-id before 'for'
  for(i=0;i<M;i++)
  ^
0_0_16110861_18063.cpp:6:10: error: 'i' does not name a type
  for(i=0;i<M;i++)
          ^
0_0_16110861_18063.cpp:6:14: error: 'i' does not name a type
  for(i=0;i<M;i++)
              ^
0_0_16110861_18063.cpp:26:2: error: expected unqualified-id before 'return'
  return 0;
  ^
0_0_16110861_18063.cpp:27:1: error: expected declaration before '}' token
 }
 ^