实验一

#include<stdio.h>;
int main()
{
int x;

printf("输入一个整数：\n");
scanf ("%d,&x");
if("x%2==1")
    printf("是奇数");
else
    printf("是偶数");
    return 0;
}

 

#include<stdio.h>;
int main()
{
int days ;
printf("输入一个整数:\n");
scanf("%d,&days");
if("days>=1&&days<=5")
printf("workdays,fighting\n");
else if ("days>=6&&days<=7")
printf("weekend,relaxing\n");
else 
printf("ooops,not in 1-7\n");
return 0;
}

　　

#include<stdio.h>;
int main()
{
char ch;
printf("输入一个字符:\n");
scanf("%c,&ch");
if("ch>=97&&<=122");
ch=ch-32;
printf("%C\n",ch);

return 0;
}