error before and when compile

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hi, i use opencv 231 and c++ whith visual studio 2010. i use http://docs.opencv.org/doc/tutorials/objdetect/cascade_classifier/cascade_classifier.html tutotial. but cascadeClassifier face_cascade; and cascadeClassifier eyes_cascade; have a error and shown a red line below cascadeClassifier. after compile I get this error:

1>------ Build started: Project: faceRecognition, Configuration: Debug Win32 ------
1>Build started 04/04/2013 09:03:57 ق.ظ.
1>InitializeBuildStatus:
1>  Touching "Debug\faceRecognition.unsuccessfulbuild".
1>ClCompile:
1>  main.cpp
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(11): error C2146: syntax error : missing ';' before identifier 'face_cascade'
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(11): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(11): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(12): error C2146: syntax error : missing ';' before identifier 'eyes_cascade'
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(12): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(12): error C2086: 'int cascadeClassifier' : redefinition
1>          d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(11) : see declaration of 'cascadeClassifier'
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(12): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(18): error C2065: 'Cvcapture' : undeclared identifier
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(18): error C2065: 'capture' : undeclared identifier
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(21): error C2228: left of '.load' must have class/struct/union
1>          type is 'int'
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(22): error C2228: left of '.load' must have class/struct/union
1>          type is 'int'
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(25): error C2065: 'capture' : undeclared identifier
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(26): error C2065: 'capture' : undeclared identifier
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(30): error C2065: 'capture' : undeclared identifier
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(52): error C3861: 'equaliseHist': identifier not found
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(54): error C2228: left of '.detectMultiScale' must have class/struct/union
1>          type is 'int'
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(55): warning C4018: '<' : signed/unsigned mismatch
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(57): error C2065: 'point' : undeclared identifier
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(57): error C2146: syntax error : missing ';' before identifier 'center'
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(57): error C3861: 'center': identifier not found
1>d:\visual studio 2010\projects\facerecognition\facerecognition\main.cpp(58): error C2065: 'center' : undeclared identifier
1>d ...