View Compilation Error

0_0_30858162_2346.cpp:4:4: error: expected primary-expression before 'int'
    int n,a,b,c,d,e,f,sum1,sum2,sum3;
    ^
0_0_30858162_2346.cpp:4:4: error: expected '}' before 'int'
0_0_30858162_2346.cpp:4:4: error: expected ',' or ';' before 'int'
0_0_30858162_2346.cpp:5:4: error: expected unqualified-id before 'while'
    while(scanf("%d",$n)!=EOF)
    ^