程序代码：

#include <stdio.h>

char* rese(char* source,char* b,char* e)
{
    char tmp;
    if(e<=b) return source;
    tmp=*e;
    *e=*b;
    *b=tmp;
    e--;
    b++;
    rese(source,b,e);
}

int main()
{
    char test[]="This is a test text.";
    char* b=test;
    char* e=test;
    while(*e!='\0') ++e;
    char* p=rese(test,b,e-1);
    printf("%s\n",p);
    return 0;
}