View Compilation Error

0_0_34187257_24222.cpp: In function 'int main()':
0_0_34187257_24222.cpp:7:18: error: 'a' cannot be used as a function
   scanf("%f",&a(1));
                  ^
0_0_34187257_24222.cpp:8:18: error: 'a' cannot be used as a function
   scanf("%f",&a(2));
                  ^
0_0_34187257_24222.cpp:9:12: error: 'a' cannot be used as a function
   B=abs(a(2));
            ^
0_0_34187257_24222.cpp:10:12: error: 'a' cannot be used as a function
   A=abs(a(1));
            ^