shi*_*bar 1 c++ visual-studio-2010
我在特定功能中使用stricmp有问题,在其他功能中,除此功能外,它都能正常工作。问题是,即使它比较相同的字符串(char *),也不会返回0。这可能是什么问题?(很抱歉,我会尝试对其进行格式化)是以下代码:
Employee* CityCouncil::FindEmp(list<Employee*> *lst, char* id)
{
bool continue1 = true;
Employee* tmp= NULL;
char* tmpId = NULL, *tmpId2 = NULL;
list<Employee*>::iterator iter = lst->begin();
if ((id == NULL) || (lst->empty()==true))
return NULL;
while ((iter != lst->end()) && (continue1)){
tmp = (Employee*)(*iter);
tmpId = (*tmp).GetId();
if(tmpId != NULL)
{
if(stricmp(tmpId,id) == 0)
continue1 = false;
}
if (continue1 == true)
iter++;
}
if (iter == lst->end())
return NULL;
return (Employee*)(*iter);
}
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永远不要责怪属于C库的函数。stricmp当然可以按预期工作,这意味着字符串确实不同。此函数的逻辑肯定有问题-您应该使用printf语句找出字符串在何处以及为何不同的原因。
编辑:我整理了一个简单的测试程序。这对我有用:
#include <stdio.h>
#include <list>
using namespace std;
// Dummy
class Employee
{
public:
Employee(const char *n){ id = strdup(n); }
char *id;
char *GetId() { return this->id; }
};
Employee* FindEmp(list<Employee*> *lst, char* id)
{
bool continue1 = true;
Employee *tmp = NULL;
char* tmpId = NULL;
list<Employee*>::iterator iter = lst->begin();
if(id == NULL || lst->empty())
return NULL;
while(iter != lst->end() && continue1)
{
tmp = (Employee*)(*iter);
tmpId = (*tmp).GetId();
if(tmpId != NULL)
{
if(stricmp(tmpId,id) == 0)
continue1 = false;
}
if(continue1 == true)
iter++;
}
if(iter == lst->end())
return NULL;
return (Employee*)(*iter);
}
int main(int argc, char **argv)
{
list<Employee*> l;
l.push_back(new Employee("Dave"));
l.push_back(new Employee("Andy"));
l.push_back(new Employee("Snoopie"));
printf("%s found\n", FindEmp(&l, "dave")->GetId());
printf("%s found\n", FindEmp(&l, "andy")->GetId());
printf("%s found\n", FindEmp(&l, "SnoOpiE")->GetId());
return 0;
}
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请注意,我使用了您提供的功能。同样,stricmp没错,问题一定出在您的代码中。