pku1951.cpp

这是ACM 方面的资料 是PKU的 北京大学的出来的

#include <stdio.h>

char s[80];
int st[30];

int IsUpper(char c)
{
	if (c >= 'A' && c <= 'Z')
	{
		return 1;
	}
	return 0;
}

int main()
{
	int i, j, l;
	while (gets(s))
	{
		memset(st, 0, sizeof(st));
		st['A' - 'A'] = 1;
		st['E' - 'A'] = 1;
		st['I' - 'A'] = 1;
		st['O' - 'A'] = 1;
		st['U' - 'A'] = 1;
		i = 0;
		while (s[i] != '\0')
		{
			if (IsUpper(s[i]))
			{
				if (st[s[i] - 'A'])
				{
					s[i] = '_';
				}
				else
				{
					st[s[i] - 'A'] = 1;
				}
			}
			i++;
		}
		l = i;

		for (i = 0, j = 0; i < l; i++)
		{
			if (s[i] != '_')
			{
				s[j++] = s[i];
			}
		}
		s[j] = 0;

		for (i = j; i > 0; i--)
		{
			if (s[i - 1] == ' ' && !IsUpper(s[i]))
			{
				s[i - 1] = '_';
			}
		}
		i = 0;
		while (s[i] == ' ' || s[i] == '_') s[i++] = '_';
		for (i = 0; i < j; i++)
		{
			if (s[i] != '_')
			{
				printf("%c", s[i]);
			}
		}
		printf("\n");
	}
	return 0;
}