#include <iostream>
#include <string>
using namespace std;
// Turns a digit between 1 and 9 into its english name
// Turn a number into its english name
string int_name(int n)
{
string digit_name;
{
if (n == 1) return "one";
else if (n == 2) return "two";
else if (n == 3) return "three";
else if (n == 4) return "four";
else if (n == 5) return "five";
else if (n == 6) return "six";
else if (n == 7) return "seven";
else if (n == 8) return "eight";
else if (n == 9) return "nine";
return "";
}
string teen_name;
{
if (n == 10) return "ten";
else if (n == 11) return "eleven";
else if (n == 12) return "twelve";
else if (n == 13) return "thirteen";
else if (n == 14) return "fourteen";
else if (n == 14) return "fourteen";
else if (n == 15) return "fifteen";
else if (n == 16) return "sixteen";
else if (n == 17) return "seventeen";
else if (n == 18) return "eighteen";
else if (n == 19) return "nineteen";
return "";
}
string tens_name;
{
if (n == 2) return "twenty";
else if (n == 3) return "thirty";
else if (n == 4) return "forty";
else if (n == 5) return "fifty";
else if (n == 6) return "sixty";
else if (n == 7) return "seventy";
else if (n == 8) return "eighty";
else if (n == 9) return "ninety";
return "";
}
int c = n; // the part that still needs to be converted
string r; // the return value
if (c >= 1000)
{
r = int_name(c / 1000) + " thousand";
c = c % 1000;
}
if (c >= 100)
{
r = r + " " + digit_name(c / 100) + " hundred";
c = c % 100;
}
if (c >= 20)
{
r = r + " " + tens_name(c /10);
c = c % 10;
}
if (c >= 10)
{
r = r + " " + teen_name(c);
c = 0;
}
if (c > 0)
r = r + " " + digit_name(c);
return r;
}
int main()
{
int n;
cout << endl << endl;
cout << "Please enter a positive integer: ";
cin >> n;
cout << endl;
cout << int_name(n);
cout << endl << endl;
return 0;
}
我继续收到此错误代码:
intname2.cpp:在函数âstd:: string中 int_name(INT)A:
intname2.cpp:74:错误:不匹配 调用â(std :: string)(int)â intname2.cpp:80:错误:不匹配 调用â(std :: string)(int)â intname2.cpp:86:错误:不匹配 调用â(std :: string)(int&amp;)â intname2.cpp:91:错误:不匹配 调用â(std :: string)(int&amp;)â
答案 0 :(得分:3)
当您将digit_name
,teen_name
等用作函数时,它们被定义为变量。如果你想像这样使用它们,你需要在int_name
函数之前定义它们,如下所示:
string digit_name(int n)
{
if (n == 1) return "one";
else if (n == 2) return "two";
else if (n == 3) return "three";
else if (n == 4) return "four";
else if (n == 5) return "five";
else if (n == 6) return "six";
else if (n == 7) return "seven";
else if (n == 8) return "eight";
else if (n == 9) return "nine";
return "";
}
答案 1 :(得分:1)
请发布您的老师使用的确切字词,以便我们就此问题向您提供适当的建议。
以下是一些提示:
确定废弃提示......根据老师的要求我认为它可能看起来有点像这样:
string int_name(int n)
{
int c = n; // the part that still needs to be converted
string r; // the return value
if (c >= 1000)
{
r = int_name(c / 1000) + " thousand";
c = c % 1000;
}
if (c >= 100)
{
// If you have covered switch statements then it will look like this
string digitName;
switch(c/100) // <- instead of calling digit_name(c/100), we call switch(c/100)
{
case 1:
// assign the digit name
digitName = "one";
break;
case 2:
//... fill here with your own code
break;
case 3:
//... fill here with your own code
break;
// write all the cases through 9
default:
digitName = "";
break;
}
// in the result string use the digitName variable
// instead of calling the digit_name function
r = r + " " + digitName + " hundred";
c = c % 100;
}
if (c >= 20)
{
r = r + " " + tens_name(c /10);
c = c % 10;
}
if (c >= 10)
{
r = r + " " + teen_name(c);
c = 0;
}
if (c > 0)
r = r + " " + digit_name(c);
return r;
}
请注意,我正在使用switch语句,但如果您的教师尚未向您显示切换语句,那么您仍然可以使用if / else语句:
string int_name(int n)
{
int c = n; // the part that still needs to be converted
string r; // the return value
if (c >= 1000)
{
r = int_name(c / 1000) + " thousand";
c = c % 1000;
}
if (c >= 100)
{
// declare a digitName
string digitName;
// declare a temporary value
int temp = c/100;
if(1 == temp)
{
// assign the digit name
digitName = "one";
}
else if( 2 == temp )
{
digitName = "two";
}
else if( 3 == temp )
{
// fill in the rest
}
else if( 4 == temp )
{
// fill in the rest
}
// write all the other else if statements
else
{
digitName = "":
}
// in the result string use the digitName variable
// instead of calling the digit_name function
r = r + " " + digitName + " hundred";
c = c % 100;
}
if (c >= 20)
{
r = r + " " + tens_name(c /10);
c = c % 10;
}
if (c >= 10)
{
r = r + " " + teen_name(c);
c = 0;
}
if (c > 0)
r = r + " " + digit_name(c);
return r;
}
您必须使用digit_name
获取第一个示例并将其应用于tens_name
和teen_name
个函数。
警告:强>
实际上,您不希望重复相同的代码,并使用一堆可能在其自身功能中的代码来混淆单个函数。你总是想把重复的代码分解成函数......如果她在你可以使用函数时要求你重复代码那么你应该关注。问你的老师,这是她真的希望你做的事情!