0_0_35100126_20688.cpp: In function 'int main()': 0_0_35100126_20688.cpp:12:3: error: expected initializer before 'r' r=(sqrt(5.0)+1)/2; ^ 0_0_35100126_20688.cpp:15:11: error: 'r' was not declared in this scope t=(int )r*c; ^