我尝试运行以下函数时出现错误:
char* reverseInPlace(char* src)
{
//no need to alloc or free memory
int i=0;
int size=mystrlen(src);
for(i=0;i<size;i++)
{
int j=size-i-1;
if(i<j)
{
char temp;
printf("Interchange start %d:%c with %d:%c",i,src[i],j,src[j]);
temp=src[i];
src[i]=src[j];//error occurs here
src[j]=temp;
printf("Interchange complete %d:%c and %d:%c",i,src[i],j,src[j]);
}
}
return src;
}
我这样调用代码:
char* rev2=reverseInPlace("BeforeSunrise");
printf("The reversed string is %s\n",rev2);
错误信息如下:
Interchange start 0:B with 12:e
Process terminating with default action of signal 11 (SIGSEGV)
Bad permissions for mapped region at address 0x401165
为什么会出现这个错误?