实验一

# include<stdio.h>
int main()
{
    printf("201883300118");
    return 0;
}

 # include<stido.h>

int product (int,int);

int main (viod)

{

int x,y,s;

scanf("%d%d",&x,&y)；

s=product(x,y);

printf("The mul is:%d", s)

return 0;

}

int product (int a,int b)

{

int mul;

mul=a*b;

return mul;

} 

#include <stdio.h>
int main() {
int x;
printf("输入一个整数: \n");
scanf("%d",&x);

if(x%==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(1||2||3||4||5) 
printf("workdays, fighting\n");
else if(6||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-32;
printf("%c\n",ch);
return 0;
}

 

 

  全程都是迷糊状态，不知道是怎么写完的。。。。。。