control1.cpp:1:9: error: #include expects "FILENAME" or <FILENAME> control1.cpp:3: error: 'fstream' does not name a type control1.cpp: In function 'int main()': control1.cpp:8: error: 'fin' was not declared in this scope control1.cpp:8: error: 'a' was not declared in this scope control1.cpp:8: error: 'b' was not declared in this scope control1.cpp:8: error: 'c' was not declared in this scope control1.cpp:9: error: 'x' was not declared in this scope control1.cpp:9: error: expected ';' before ')' token control1.cpp:24: error: expected primary-expression at end of input control1.cpp:24: error: expected ';' at end of input control1.cpp:24: error: expected primary-expression at end of input control1.cpp:24: error: expected ')' at end of input control1.cpp:24: error: expected statement at end of input control1.cpp:24: error: expected '}' at end of input