在划线处填写适当内容完成程序，本程序当输入字符是数字时输出字符串“number”，否则输出“none”int check_number(char x){if ((x>='0')&&(x<='9'))return 1;else return 0;}int main(void){char ch;while(1){scanf("%c",&ch);if(ch=='#') break;if(__________)printf("number\n");else printf("none\n");}return 0;}