201983270562实验1

#include<stdio.h>
int main()
{
    printf("201983270562");
    return 0;
}

#include<stdio.h>
int main()
{
int x;
printf("输入一个整数:\n");
scanf("%d,&x");
if(x%2==0)
printf("是偶数");
else
printf("是奇数");
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,relax\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>=‘a‘&& ch<=‘z‘)
    ch=ch-‘a‘+‘A‘;
    printf("%c\n",ch);
    return 0;
}