实验1

nt 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 ;

}

 

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;
}

 

 

int main(){
char ch;
printf("输入一个字符：\n");
scanf("%c",&ch);
if(ch>=97&&ch<=122)
ch=ch-32;
printf("%c\n",ch);
return 0;
}