嘿，当我尝试通过不支持返回的字符串值时，我正在试验我所知道和意识到的，知道吗？抱歉，如果我的代码是菜鸟风格(我只有 2 个月的经验)，我正计划在函数之间拆分代码，但我似乎做不到，因为返回我的字符串数组不能用 return :( 这是代码:
#include <iostream>
#include <math.h>
#include <sstream>
using namespace std;
int itemlist=0;
int c=0;
int r = 0;
int itemlistdec()
{
cout<<"How many items would you like to input?";
cin>>itemlist;
return itemlist;
}
int main() {
itemlistdec();
string item[4][itemlist];//declares item and that columns equal to itemlist whose content is declared right above
for (int c=0;c<itemlist;c++)
{
for (int r=0;r<3;r++) //DETERMINES WHERE EACH RECORD GOES
{
if (r==0)
{
cout<<"Please enter the name of the item ";
}
if (r==1)
{
cout<<"Please input the buying price\n";
}
if (r==2)
{
cout<<"Please input the selling price\n";
}
cin>>item[r][c];
}
}
int calc[3][itemlist];//declaring calc and itemlist
for (int r = 0;r<itemlist;r++)
{
istringstream(item[1][r])>>calc[0][r]; //TAKES BUYING PRICE INTO INT ARRAY FOR CALCULATION
}
for (int r = 0;r<itemlist;r++)
{
istringstream(item[2][r])>>calc[1][r]; //TAKES SELLING PRICE INTO INT ARRAY FOR CALCULATION
}
for (int fart = 0;fart<itemlist;fart++)
{
calc[2][fart] = calc[1][fart] - calc[0][fart]; //REPEATS CALCULATION FOR PROFIT UNTIL ITEMLIST IS REACHED
}
for (int r = 0;r<itemlist;r++)
{
stringstream ss;
ss<<calc[2][r]; //CONVERTS BOTH PROFIT VALUES INTO STRINGS
item[3][r] = ss.str();
}
cout<<"______________________________________________\n"; //DISPLAYS OUTPUT IN TABLE FORM
cout<<"Item\t\tBuying Price\t\tSelling Price\t\tProfit\n";
for (int c=0;c<itemlist;c++)
{
for (int r=0;r<4;r++)
{
cout<<item[r][c]<<"\t\t";
if (r==1)
{
cout<<"\t";
}
if (r==2)
{
cout<<"\t";
}
if (r==3)
{
cout<<"\n";
}
}
}
return 0;
}
最佳答案
我认为你可以使用 vector ，它非常强大。像那样:
std::vector<std::vector<std::string> > mySecondVector;
std::vector<std::string> myFirstVector;
myFirstVector.push_back("MyString");
mySecondVector.push_back(myFirstVector);
mySecondVector[i][j]; // to access
对于添加，访问 http://www.cplusplus.com/reference/vector/vector/ 上的元素 watch
关于c++ - 我将如何继续处理函数之间的 "return"字符串数组？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31353036/