View Compilation Error

0_0_30713671_8358.cpp: In function 'int main()':
0_0_30713671_8358.cpp:7:27: error: expected primary-expression at end of input
     while(scanf("%f%f%f%f",
                           ^
0_0_30713671_8358.cpp:7:27: error: expected ')' at end of input
0_0_30713671_8358.cpp:7:27: error: expected statement at end of input
0_0_30713671_8358.cpp:7:27: error: expected '}' at end of input