View Compilation Error

0_0_19085035_7548.cpp: In function 'int main()':
0_0_19085035_7548.cpp:12:4: error: 'f1' was not declared in this scope
    f1=0;f2=0;
    ^
0_0_19085035_7548.cpp:12:9: error: 'f2' was not declared in this scope
    f1=0;f2=0;
         ^