为什么最后有三个空行？(语言-c语言)

img

img


#include
int main()
{
char c;

while(c!='\n'){
    scanf("%c",&c);
    if(c=='c'||c=='C')
        printf("BEIJING OLYMPIC GAMES\n");
    else
        if(c=='j'||c=='J')
            printf("JAPAN WORLD CUP\n");
    else
        if(c=='k'||c=='K')
            printf("KOREA WORLD CUP\n");
    else
        printf("%c\n",c);
}
return 0;

}