1126题解

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

int main()

{

int i=0,j=0,length = 0;

char c,s1[100];

gets(s1);

length = strlen(s1);

for(i=length-1;i>=0;i--)

{

    s1[length+j++] = s1[i];

}

s1[length+j] = '\0';

puts(s1);

system("pause");

}