[英]Strange error by G++
我通過g ++得到以下錯誤:
wormAlgo.cpp: In function ‘void svm(cv::Mat&, cv::Mat&, cv::Mat&, cv::Mat&)’:
wormAlgo.cpp:146:8: error: expected unqualified-id before numeric constant
wormAlgo.cpp:146:8: error: expected ‘;’ before numeric constant
我的代碼是這樣的:
void svm(cv::Mat& trainingData, cv::Mat& trainingClasses, cv::Mat& testData, cv::Mat& testClasses)
{
CvSVMParams param = CvSVMParams();
param.svm_type = CvSVM::C_SVC;
param.kernel_type = CvSVM::RBF; //CvSVM::RBF, CvSVM::LINEAR ...
param.degree = 0; // for poly
param.gamma = 20; // for poly/rbf/sigmoid
param.coef0 = 0; // for poly/sigmoid
param.C = 7.0; // for CV_SVM_C_SVC, CV_SVM_EPS_SVR and CV_SVM_NU_SVR
param.nu = 0.0; // for CV_SVM_NU_SVC, CV_SVM_ONE_CLASS, and CV_SVM_NU_SVR
param.p = 0.0; // for CV_SVM_EPS_SVR
param.class_weights = NULL; // for CV_SVM_C_SVC
param.term_crit.type = CV_TERMCRIT_ITER +CV_TERMCRIT_EPS;
param.term_crit.max_iter = 1000;
param.term_crit.epsilon = 1e-6;
第146行的代碼是param.C = 7.0; // for CV_SVM_C_SVC, CV_SVM_EPS_SVR and CV_SVM_NU_SVR
param.C = 7.0; // for CV_SVM_C_SVC, CV_SVM_EPS_SVR and CV_SVM_NU_SVR
你能幫我么。
你可能有一個C
的定義。 看看代碼:
#define C 42
class Foo
{
};
void f()
{
Foo f;
f.C = 7;
}
在預處理之后,行fC = 7
將變為f.42 = 7
,因此,它將輸出錯誤。
PS:鏗鏘聲輸出看起來更漂亮
/home/soon/Src/C++/main/main.cpp:14:7: error: expected unqualified-id
f.C = 7;
^
/home/soon/Src/C++/main/main.cpp:4:11: note: expanded from macro 'C'
#define C 42
^
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