#include <stdio.h>
#include <stdlib.h>
#include "string.h"
#include "ctype.h"
int main()
{int i,n,k;
  char a[50];
    while(scanf("%d",&n)!=EOF)
      {
        for(i=1;i<=n;i++)
          {
           scanf("%s",a);
           getchar();
           k=strlen(a);
           if (islower(a[0])) printf("%c",toupper(a[0]));
           for (i=1;i<=k-1;i++)
              {
               if (a[i-1]==' ' || a[i-1]==',')
               {a[i]=a[i]-32;
               printf(" ");}
               printf("%c",a[i]);
           }}
      }
    return 0;
}
2
i like acm
i want to get an accepted
范例输出：

I Like Acm
I Want To Get An Accepted
改写首字母大写 为什么中间输不出空格

scanf函数遇到空格就截断，所以数组a中没有空格，那么按照例子，最后的if语句就不会为真，所以不输出空格。