将数组复制到向量中
|
我写了一个小程序：
void showrecord()
{
char *a[]={ \"O_BILLABLE_ACCOUNT\",\"O_CUSTOMER_TYPE_INDICATOR\",
\"O_A_PARTY_MSISDN_ID\",\"O_A_PARTY_EQUIPMENT_NUMBER\",
\"O_A_PARTY_IMSI\",\"O_A_PARTY_LOCATION_INFO_CELL_ID\",
...
};
vector<std::string> fields(a,a+75);
cout<<\"done!!!\"<<endl;
}
int main()
{
showrecord();
}
Warning 829: \"test.cpp\", line 12
# Implicit conversion of string literal to \'char *\' is deprecated.
D_TYPE\",\"O_VARCHAR_5\",\"O_VARCHAR_6\",\"O_VARCHAR_7\",\"O_VARCHAR_8\",\"O_VARCHAR_9\"};
(gdb) where
#0 0x6800ad94 in strlen+0xc () from /usr/lib/libc.2
#1 0xabc0 in std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string<char,std::char_traits<char>,std::allocator<char>>+0x20 ()
#2 0xae9c in std<char const **,std::basic_string<char,std::char_traits<char>,std::allocator<char>> *,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>>::uninitialized_copy+0x60 ()
#3 0x9ccc in _C_init_aux__Q2_3std6vectorXTQ2_3std12basic_stringXTcTQ2_3std11char_traitsXTc_TQ2_3std9allocatorXTc__TQ2_3std9allocatorXTQ2_3std12basic_stringXTcTQ2_3std11char_traitsXTc_TQ2_3std9allocatorXTc____XTPPCc_FPPCcT118_RW_is_not_integer+0x2d8
()
#4 0x9624 in showrecord () at test.cpp:13
#5 0xdbd8 in main () at test.cpp:21
没有找到相关结果
已邀请:
3 个回复
佃蒜狗掂哥
至对于C ++ 03，没有可以用“更好的”方式初始化向量的方法，但是对于C ++ 0x，您可以使用更方便的语法，而无需使用C数组：std::vector<std::string> fields { \"O_BILLABLE_ACCOUNT\", // ... };澳绍能
代替。字符串文字的类型为，而不是，因此会出现警告。痰降锭骂奸
#include <algorithm> #include <iostream> #include <iterator> #include <string> #include <vector> template <typename Array, std::size_t Size> std::vector<std::string> make_vector(Array (&ar)[Size]) { std::vector<std::string> v(ar, ar + Size); return v; } int main() { char const* a[] = { \"Aa\",\"Bb\", \"Cc\",\"Dd\", \"Ee\",\"Ff\" }; // copy C-array to vector std::vector<std::string> fields = make_vector(a); // test std::copy(fields.begin(), fields.end(), std::ostream_iterator<std::string>(std::cout, \"\\n\")); }