`我正在尝试编写一个反转两个字符串的程序,虽然我做得非常好,但是当我运行它时,程序一直运行到第26行,然后出现分段错误错误。该程序编译好。我想知道在我的功能中是否有一个简单或明显的问题,我没有看到,任何帮助将不胜感激!分割错误错误
在此先感谢
#include <iostream>
#include <string>
using namespace std;
// Reversing the characters in strings.
void reverse(string str);
void swap(char * first, char *last);
int main() {
// declarations and initialization
string str1;
string str2;
cout << "Please enter the first string of characters:\n";
cin >> str1;
cout << "Please enter the second string of characters:\n";
cin >> str2;
cout << "The strings before reversing are:" << endl;
cout << str1 << " " << str2 << endl;
// reverse str1
reverse(str1);
// reverse str2
reverse(str2);
// output
cout << "The strings after reversing: " << endl;
cout << str1 << " " << str2 << endl;
return 0;
}
void reverse(string str) {
int length = str.size();
char *first = NULL;
char *last = NULL;
first = &str[0];
last = &str[length - 1];
for (int i = 0; first < last; i++) {
swap(first, last);
first++;
last--;
}
}
void swap(char *first, char *last) {
char * temp;
*temp = *first;
*first = *last;
*last = *temp;
}
哪一行是第26行? – sth
之后输出“反转之前的字符串是......”...... – blaedj
就这样,您知道,您正在将'string'按值传递给'reverse',因此它实际上不会反转字符串。 –