清明假期作业

/* Note:Your choice is C IDE */
#include "stdio.h"
void main()
{
int a;
a=10;
printf("%d\n",a);
printf("%o\n",a);
printf("%x\n",a);
}

题目1

题目2

/* Note:Your choice is C IDE */
#include "stdio.h"
void main()
{
float i;
scanf("%f",&i);
printf("%8.4f\n",i);
printf("%09.3f\n",i);
printf("%f",i);

}

题目3

/* Note:Your choice is C IDE */
#include "stdio.h"
void main()
{
int a;
scanf("%d",&a);
if(a>-1&&a<10)
printf("ok");
else
printf("not ok");

}

题目4

/* Note:Your choice is C IDE */
#include "stdio.h"
void main()
{
int a;
scanf("%d",&a);
if(a>1000)
printf("big");
if(a>100&&a<1000)
printf("middle");
else
printf("small");

}

题目5

/* Note:Your choice is C IDE */
#include "stdio.h"
void main()
{
int a;
scanf("%d",&a);

switch(a)
{
case 1:printf("January\n");break;
case 2:printf("February\n");break;
case 3:printf("March\n");break;
case 4:printf("April\n");break;
case 5:printf("May\n");break;
case 6:printf("June\n");break;
case 7:printf("July\n");break;
case 8:printf("Auguse\n");break;
case 9:printf("September\n");break;
case 10:printf("Sctober\n");break;
case 11:printf("November\n");break;
case 12:printf("December\n");break;
default:printf("not valid month number");
}
}

题目6 /* Note:Your choice is C IDE */
#include "stdio.h"
void main()
{
int i,is;
is=0;
i=2;
while(i<=100)
{
is=is+i;
i=i+2;
}
printf(" %d",is);

}

题目7/* Note:Your choice is C IDE */

#include "stdio.h"

void main()

{

int i,is;

is=0;

i=2;

while(i<=100)

{

is=is+i;

i=i+2;

}

printf(" %d",is);

}

题目8

/* Note:Your choice is C IDE */

#include "stdio.h"

void main()

{

int i,is=0;

i=2;

do

{

is+=i;

i=i+2;

}while(i<=100);

printf("%d",is);

}