UC知道关于程序运行时字符串的输入
来源：百度知道 编辑：UC知道 时间：2024/06/07 19:37:50
大家好，最近学vc++碰到这个问题，我要输入一串字符串，这个字符串的长度是未知的，比如可能是“loda”，也可能是“vigoss”，怎样写这个程序，而且最后输入的字符串的内容要输出。下面是我写的程序，编译能通过，但是运行时老出现一些问题，请大家帮我改正下。
#include "stdafx.h"
#include "iostream"
using namespace std;
void _tmain(int argc, _TCHAR* argv[])
{
char *file;
file=new char[];
cout<<"please input the files!"<<endl;
scanf("%s", file);
printf("%s", file);
delete []file;
system("pause");
}
运行是会出现这个问题
Windows has triggered a breakpoint in 8_4.exe.
This may be due to a corruption of the heap, and indicates a bug in 8_4.exe or any of the DLLs it has loaded.
The output window may have more diagnostic information
output windows 显示
'8_4.exe': Loaded 'E:\vc_work\8_4\debug\8_4.exe', Symbols loaded.
'8_4.exe': Loaded 'C:\WINDOWS\system32\
#include "stdafx.h"
#include "iostream"
using namespace std;
void _tmain(int argc, _TCHAR* argv[])
{
char *file;
file=new char[];
cout<<"please input the files!"<<endl;
scanf("%s", file);
printf("%s", file);
delete []file;
system("pause");
}
运行是会出现这个问题
Windows has triggered a breakpoint in 8_4.exe.
This may be due to a corruption of the heap, and indicates a bug in 8_4.exe or any of the DLLs it has loaded.
The output window may have more diagnostic information
output windows 显示
'8_4.exe': Loaded 'E:\vc_work\8_4\debug\8_4.exe', Symbols loaded.
'8_4.exe': Loaded 'C:\WINDOWS\system32\
用字符数组就可以了，以下代码已经调试通过：
char code[256];
cout<<"please input the files!"<<endl;
cin>>code;
cout<<"Input filename is:"<<code<<endl;
使用 new 从堆上分配内存要指定大小，所以
file=new char[];这句是错的。
读取字符串应该用 gets(char*)。