map<int,int>mymap;
pair<map<int, int>::iterator, bool> ret;
ret=mymap.insert(pair<int,int>(deliciousness[i],1));
if(ret.second)
{
cout<<"insert success"<<endl;
}
else
{
cout<<"insert error"<<endl;
}
C++ map插入成功与否判断
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2022-06-13
map<int,int>mymap;
pair<map<int, int>::iterator, bool> ret;
ret=mymap.insert(pair<int,int>(deliciousness[i],1));
if(ret.second)
{
cout<<"insert success"<<endl;
}
else
{
cout<<"insert error"<<endl;
}
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