我是一名C ++初学者并编写了一个程序来检查两个短语是否是字谜。正在一次读取一个字符并将其存储在一个数组中。我有一切工作,除了在某些情况下,额外的字符被插入数组。
例如,如果我输入短语aabb和abba,这就是程序的输出:
输入可能是字谜的两行:
- > AABB
- > ABBA
字符串A是aabb
字符串B是abbai?
这两个字符串不是字谜。
他们应该是字谜,但出于某种原因,我呢?被添加到数组中,导致短语不是字谜。我可能忽略了代码中的一个简单错误,但非常感谢任何反馈。
以下是代码:
#include <string>
#include <algorithm>
#include <iostream>
using namespace std;
int check_anagram(char [], char []);
int main()
{
char ch, a[60], b[60];
int flag, i;
cout << "Enter two lines that might be anagrams:" << endl;
cout << "--> ";
cin.get(ch);
ch = tolower(ch);
i = 0;
while (ch != '\n')
{
if (ch > '@') {
a[i] = ch;
i++;
}
cin.get(ch);
ch = tolower(ch);
}
cout << "--> ";
cin.get(ch);
ch = tolower(ch);
i = 0;
while (ch != '\n')
{
if (ch > '@') {
b[i] = ch;
i++;
}
cin.get(ch);
ch = tolower(ch);
}
flag = check_anagram(a, b);
cout << "String A is " << a << endl;
cout << "String B is " << b << endl;
cout << "The two strings ";
if (flag == 1)
cout << "ARE";
else
cout << "are NOT";
cout << " anagrams." << endl << endl;
return 0;
}
int check_anagram(char a[], char b[])
{
int first[26] = {0}, second[26] = {0}, c = 0;
while (a[c] != '\0')
{
first[a[c]-'a']++;
c++;
}
c = 0;
while (b[c] != '\0')
{
second[b[c]-'a']++;
c++;
}
for (c = 0; c < 26; c++)
{
if (first[c] != second[c])
return 0;
}
return 1;
}
提前致谢!
答案 0 :(得分:3)
您只需要使用'\0'
终止两个字符数组,因为check_anagram
中的逻辑将两个数组视为以NULL结尾。
..
while (ch != '\n')
{
if (ch > '@') {
a[i] = ch;
i++;
}
cin.get(ch);
ch = tolower(ch);
}
a[i] = '\0'; // <<<<<<<< Add this line
cout << "--> ";
cin.get(ch);
ch = tolower(ch);
i = 0;
while (ch != '\n')
{
if (ch > '@') {
b[i] = ch;
i++;
}
cin.get(ch);
ch = tolower(ch);
}
b[i] = '\0'; // <<<<<<<< Add this line
..
结果如下:
Enter two lines that might be anagrams:
--> aabb
--> abba
String A is aabb
String B is abba
The two strings ARE anagrams.