HDU 2026 首字母变大写

#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;
int main()
{
    char s[105];
    while(gets(s))
    {
        int len = strlen(s);
        printf("%c", s[0]-32);  //小写字母的ASCII比对应的大写字母大32
        for(int i = 1; i < len; i++)
        {
            if(s[i-1] == ' ') printf("%c", s[i]-32); 
            else printf("%c", s[i]);
        }
        printf("\n");
    }
    return 0;
}