c - 如何修复访问冲突写入异常

Question

我有以下代码

#include <stdio.h>
#include<conio.h>
#include <ctype.h>
char *convertire(char *sir)
{
    char *sir2="";
    while (*sir)
    {
        *sir2 = toupper(*sir);
        sir++;
    }
    return (sir2);
}
void main(void)
{
    char *sir = "Home is good";
    char *sir2 = convertire(sir);
    printf("Sirul obtinut este : %s\n", sir2);
    _getch();
}

当我尝试编译时出现以下错误

First-chance exception at 0x00E3141B in pointeri.exe: 0xC0000005: Access violation writing location 0x00E35858. If there is a handler for this exception, the program may be safely continued.

你能帮我解决这个问题吗？

Answer 1

您还需要跟踪 sir2 的开始，基本上您需要像这样修改 convertire():

char *convertire(char *sir)
{   
    char *p;
    char *sir2=(char *)malloc(strlen(sir)+1);
    p = sir2;
    while (*sir)
      {   
        *sir2++ = toupper(*sir++);
      }
    return p;
}