View Compilation Error

0_0_13932489_30073.cpp:5:2: error: stray '\243' in program
  float a,b,c,d，l;
  ^
0_0_13932489_30073.cpp:5:2: error: stray '\254' in program
0_0_13932489_30073.cpp: In function 'int main()':
0_0_13932489_30073.cpp:5:17: error: expected initializer before 'l'
  float a,b,c,d，l;
                 ^
0_0_13932489_30073.cpp:6:35: error: 'd' was not declared in this scope
  while(scanf("%d%d%d%d",&a,&b,&c,&d)!=EOF)
                                   ^
0_0_13932489_30073.cpp:8:4: error: 'l' was not declared in this scope
    l=sqrt((a-b)*(a-b)+(c-d)*(c-d));
    ^