>>583

#include <stdio.h>
#define BUFF_SIZE (80 + 1)

int main()
{
int i;
char buff[BUFF_SIZE];

printf("英文を入力してください(80字以内)\n> ");
fgets(buff, BUFF_SIZE, stdin);

for(i = 0; buff[i] != '\0'; i++) {
if(buff[i] == ' ') {
puts("");
while((i + 1) < BUFF_SIZE && buff[i + 1] == ' ')
i++;
}
else if(!(buff[i] == ',') && !(buff[i] == '.')) {
printf("%c", buff[i]);
}
}

return 0;
}