View Compilation Error

0_0_15478912_24849.cpp:4:6: error: expected primary-expression before 'while'
      while(scanf("%d %d",&n,&m)!=EOF)
      ^
0_0_15478912_24849.cpp:4:6: error: expected '}' before 'while'
0_0_15478912_24849.cpp:4:6: error: expected ',' or ';' before 'while'