week-6作业

http://blog.csdn.net/monkshood/article/details/22744257 第6周作业

#include "stdio.h"

void main()

{

int a;

scanf("%d",&a);

printf("%x,%o,%d",a,a,a);

}

2、#include "stdio.h"

void main()

{

float a;

scanf("%d",a);

printf("%8.4f\n",a);

printf("%09.3f\n",a);

}

3、#include "stdio.h"

void main()

{

int x;

scanf("%d",x);

if(x>-1&&x<10)

printf("ok");

else

printf("not ok");

}

4、#include "stdio.h"

void main()

{

int a;

scanf("%d",&a);

if(a>=100)

{

if(a>1000)

printf("big");

else

printf("middle");

}

else

printf("small");

}

5、#include "stdio.h"

void main()

{

int a;

printf("请输入一个数字1和12之间：");

scanf("%d",&a);

switch(a)

{

case 1:printf("yiyue");break;

case 2:printf("eryue");break;

case 3:printf("sanyue");break;

case 4:printf("si");break;

case 5:printf("wu");break;

case 6:printf("liu");break;

case 7:printf("qi");break;

case 8:printf("ba");break;

case 9:printf("jiu");break;

case 10:printf("shi");break;

case 11:printf("shiyi");break;

case 12:printf("shier");break;

default:printf("not valid month number\n");

}

}

6、#include "stdio.h"

void main()

{

int a,sum;

sum=0;

for(a=2;a<=100;a=a+2)

sum=a+sum;

printf("%d",sum);

}

7、#include "stdio.h"

void main()

{

int a,sum;

sum=0;

a=2;

while(a<=100)

{

sum=sum=a;

a=a+2;

}

printf("%d",sum);

}

8、#include "stdio.h"

void main()

{

int a,sum;

sum=0;

a=2;

do

{

sum=sum+a;

a=a+2;

}

while(a<=100);

printf("%d",sum);

}