zoj 1151 Word Reversal

#include<cstdio>
#include<iostream>
using namespace std;

char str[105];
char ch;
int i, j;
int N, n;
int main()
{
scanf("%d", &N);
while(N--)
{
int n;
cin>>n;
getchar();
while(n--)
{
while(1)
{
ch = getchar();
if('\n' == ch || ' ' == ch)
{
for(j = i-1; j >=0; j--)
printf("%c", str[j]);
printf("%c", ch);
i=0;
}
else str[i++] = ch;
if('\n' == ch)  break;
}
}
if(N > 0) printf("\n");
}
return 0;
}