View Compilation Error

0_0_23949252_25036.cpp: In function 'int main()':
0_0_23949252_25036.cpp:5:2: error: '_int64' was not declared in this scope
  _int64 a,b,c;
  ^
0_0_23949252_25036.cpp:8:3: error: 'a' was not declared in this scope
   a=3,b=2,c=1;
   ^
0_0_23949252_25036.cpp:8:7: error: 'b' was not declared in this scope
   a=3,b=2,c=1;
       ^
0_0_23949252_25036.cpp:8:11: error: 'c' was not declared in this scope
   a=3,b=2,c=1;
           ^