# include & ltstring.h & gt
void changer(char ch[])
{
int I;
int len = strlen(ch);
I = 0;
char c;
int j = len-1;
while(j & gt;我)
{
c = ch[I];
ch[I]= ch[j];
ch[j]= c;
i++;
j-;
}
}
int main()
{
char ch[81];
gets(ch);
printf(" \ n更改前:\ n ");
printf("%s ",ch);
常;
printf(" \ n更改後:\ n ");
printf("%s ",ch);
getchar();
返回0;
}