#include int main(){char p[1000],*a;int i,L;a = &p[0];printf("input a string\n");gets(p);L = strlen(p);for (i=1;i<=L;i++) printf("%c", *(a+L-i));return 0;}
#include { int i, t; char a[1000],*p=a; printf("input a string\n"); gets(a); t= strlen(p); for (i=1;i<=t;i++) printf("%c", *(p+t-i)); return 0;}