BaseMesh* BoolOp::Execute(std::vector<BaseMesh*>& meshList, const std::string& expression)
{
if (meshList.size() == 0)
return NULL;
// Parser expression
std::string postfix = InfixToPostfix(expression);
return Evalute(meshList, postfix);
}
int main(int argc, const char * argv[])
{
string infix,postfix;
double result;
cout<<"Enter an infixed expression:- ";
cin>>infix;
postfix=InfixToPostfix(infix);
cout<<"\nPostfix expression:- "<<postfix;
result=postfixEvaluation(postfix);
cout<<"\nResult evaluation:- "<<result;
return 0;
}
int main(int argc,char *argv[])
{
printf("请输入中缀表达式：\n"); //输入中缀表达式。
char src[BUFFERSIZE]={'\0'}; //存放中缀表达式的临时缓冲区
char *infix=src;
char postfix[BUFFERSIZE]={'\0'}; //存放后缀表达式的临时缓冲区
fgets(infix,BUFFERSIZE,stdin); //从标准输入流中读取要计算的四则运算表达式
printf("中缀表达式为：%s",infix);
InfixToPostfix(infix,postfix); //将中缀转换为后缀表达式
printf("后缀表达式为：%s\n",postfix);
double result;
CalculatePostfix(postfix,&result); //计算后缀表达式的结果
printf("计算结果为：%f\n",result);
return 0;
}
