实验一 part2

#include <stdio.h>
int main ()
{
    int x;
    printf("输入一个整数：\n");
    scanf("%d",&x);
    if(x%!=)
    printf("是奇数");
    else
    printf("是偶数");
    return ;
}

#include <stdio.h>
int main ()
{
    int days;
    printf("输入一个整数：\n");
    scanf("%d",&days);
    if(days>=,days<=)
      printf("workdays,fighting\n");
    else if(days<)
      printf("weekend, relax~\n");
    else
      printf("Ooops, not in 1~7\n");

    return ;
}

#include<stdio.h>
int main()
{
    char ch;
    printf("输入一个字符：\n");
    scanf("%c", &ch);
    if(ch<)
    printf("%c\n",ch);
    else
    ch=ch - ;
    printf("%c\n",ch);
    return ;
}