【发布时间】:2020-05-18 03:30:59
【问题描述】:
我正在练习一些 C++,但在拆分用户输入时遇到了麻烦。我正在使用带有 mingw32-gcc-g++-bin 9.2.0-1 的 eclipse ide 2020-03。下面是我的代码,
#include <iostream>
#include <string>
using namespace std;
int main() {
string orderbook_symbol[500000][8]; //orderid, ordertime, symbol, buy/sell, qty, price, exp time, strike
string user_order;
char * pch;
string done= "done trading";
while(user_order.compare(done) != 0) {
cin >> user_order;
pch = strtok(user_order," ");
}
}
当我点击编译时,我看到了这个错误:
23:22:06 **** Incremental Build of configuration Debug for project stasd ****
Info: Internal Builder is used for build
g++ -O0 -g3 -Wall -c -fmessage-length=0 -o "src\\stasd.o" "..\\src\\stasd.cpp"
..\src\stasd.cpp: In function 'int main()':
..\src\stasd.cpp:26:9: error: 'strtok' was not declared in this scope; did you mean 'strtol'?
26 | pch = strtok(user_order," ");
| ^~~~~~
| strtol
23:22:06 Build Failed. 1 errors, 0 warnings. (took 560ms)
我在这里举个例子:http://www.cplusplus.com/reference/cstring/strtok/ 而且我不明白为什么函数调用不在范围内错误。
【问题讨论】:
-
std::string != char*,这是您的问题。但是,我投票决定将其作为一个骗子关闭,因为该骗子解释了如何在仍然使用std::string的同时做你正在尝试的事情,我猜你想要。