#include<stdio.h>
#include<string.h>
char *revert(char *str)
{ char temp;
char *p = str;
char *q = str;
int strlong = 0;
int i;
strlong = strlen(str);
q+= (strlong - 1);
for(i = 0; i <= strlong/2; i++)
{ temp = *q;
*q = *p;
*p = temp;
p++;
q--;
}
return str;
}
main()
{ char str[] = "abcdefghijklmnopqrstuvwxyz";
revert(str);
printf("%s
",str);
}