>>237
こんなんで良いか？
#include <stdio.h>

#define MAX 1024

int main()
{
int c,i=0,j;
char ary[MAX] = {'\0'};
while((c = getchar())!='\n' && i < MAX){
if(c != '.' && c != ','&& c != '!'&& c != '?')
ary[i] = c;
i++;
}
for(j = 0; j < i;j++){
if(ary[j] != ' ')
putchar(ary[j]);
else if(ary[j] == ' ')
putchar('\n');
}
return 0;
}