堆腐败c ++函数返回一个表指针
我有一个程序,我一直试图自己解决好几天,但仍然不知道我到底做错了什么。 能否请你帮忙? 首先,我认为大惊小怪是关于char表末尾的null,但正如你所看到的,我修正了这个问题,Visual Studio仍然告诉我,我会以某种方式导致堆损坏:
“HEAP CORRUPTION DETECTED:Normal block(#186)at 0x02BAEC90.CTRL detected that the application write to memory after heap buffer buffer。”
感谢所有希望提前帮助初学者的人!
#include <iostream>
#include <cstring>
using namespace std;
#define T_SIZE 1001
char* string_merge(char *, char *);
int main()
{
int t,n;
char S1[T_SIZE], S2[T_SIZE], *S;
cin >> t; /* number of tests */
cin.getline(S1,T_SIZE);
while(t)
{
cin.getline(S1,T_SIZE,' ');
cin.getline(S2,T_SIZE);
S=string_merge(S1,S2);
cout << S << endl;
delete[] S;
t--;
}
return 0;
}
char * string_merge(char * n, char * k)
{
char *Merged;
char *n1;
char *k1;
n1 = n;
k1 = k;
if (strlen(n1) < strlen(k1))
{
const int length = (2*strlen(n1));
Merged = new char[length+1];
Merged[length] = ' ';
for (int i = 0;i < (length);i++)
{
Merged[(2*i)] = *n1 ;
Merged[(2*i) + 1] = *k1 ;
if (i < (length - 1))
{
n1++;
k1++;
}
}
return Merged;
}
else
{
const int length = (2 * strlen(k1));
Merged = new char[length + 1];
for (int i = 0;i < (length);i++)
{
Merged[(2 * i)] = *n1;
Merged[(2 * i) + 1] = *k1;
n1++;
k1++;
}
Merged[length] = ' ';
return Merged;
}
}
难道第一个字符串不会以''结尾?
还读了一个数字后
cin >> t; /* number of tests */
您应该忽略用于提交数字的换行符,因此请替换第一个getline()
cin.getline(S1,T_SIZE);
while(t)
...
同
cin.ignore();
while(t)
...
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