写一个程序,从键盘上接收一个整数,用二进制形式输出这个整数。
#include <stdio.h>
#include <stdlib.h>
int main(void) {
int a;
char c[33];
printf("请输入一个正整数");
fflush(stdout);
scanf("%d",&a);
itoa(a,c,2);
printf("%d的二进制是%s",a,c);
return EXIT_SUCCESS;
}
已知int x=5,y=3 求解下列表达式的值
!x, ~x, x&y, x&&y, x|y, x||y, x^y
#include <stdio.h>
#include <stdlib.h>
int main(void) {
int x=5,y=3;
int a,b,c,d,e,f,g;
a=!x;
b=~x;
c=x&y;
d=x|y;
e=x||y;
g=x^y;
printf("%d,%d,%d,%d,%d,%d,%d",a,b,c,d,e,f,g);
return EXIT_SUCCESS;
}
写一函数实现两个数的交换,交换变量利用位运算实现。
#include <stdio.h>
#include <stdlib.h>
int main(void) {
int a=1010;
int b=1100;
a=a^b;
b=b^a;
a=a^b;
printf("a=%d,b=%d",a,b);
return EXIT_SUCCESS;
}
编写一个函数用来实现左右循环移位,函数名为move,调用方法为move(value,n)其中value为要循环位移的数,
n为位移的位数。例如你n<0表示为左移;n>0为右移,n=4表示要右移4位,n=-3表示左移3位。
#include <stdio.h>
unsigned short moveleft(unsigned short ,int);
unsigned short moveright(unsigned short,int);
int main(int argc, char *argv[])
{
unsigned short a;
int n;
printf("输入一个函数:");
fflush(stdout);
scanf("%o",&a);
printf("输入一个数 n:");
scanf("%d",&n);
if (n > 0)
{
printf("result:%o\n",moveright(a,n));
}
else
{
n = -n;
printf("result:%o\n",moveleft(a,n));
}
system("pause");
}
unsigned short moveleft(unsigned short value,int n)
{
unsigned short z;
z = (value >> (16 - n)) | (value << n);
return z;
}
unsigned short moveright(unsigned short value ,int n)
{
unsigned short z;
z = (value >> n) | (value << (16 - n));
return z;
}
设计一个函数,使给出一个数的源码能得到该数的补码。
#include <stdio.h>
#include <stdlib.h>
int main(void) {
long n=100;
char buf[100];
ltoa(n,buf,2);
printf("yuanma:\n%s\n\n",buf);
n=~n+1;
ltoa(n,buf,2);
printf("buma:\n%s\n",buf);
return EXIT_SUCCESS;
}
(1)定义一个位域,位域列表中有4个变量,
(2)分别给位域中变量赋值,
(3)输出变量的值
#include <stdio.h>
#include <stdlib.h>
int main(void) {
struct bs{
unsigned a:1;
unsigned b:3;
unsigned c:5;
unsigned d:7;
}bit;
bit.a=4;
bit.b=8;
bit.c=13;
bit.d=34;
printf("%d,%d,%d,%d",bit.a,bit.b,bit.c,bit.d);
return EXIT_SUCCESS;
}
#include <stdio.h>
#include <stdlib.h>
int main(void) {
int a;
char c[33];
printf("请输入一个正整数");
fflush(stdout);
scanf("%d",&a);
itoa(a,c,2);
printf("%d的二进制是%s",a,c);
return EXIT_SUCCESS;
}
已知int x=5,y=3 求解下列表达式的值
!x, ~x, x&y, x&&y, x|y, x||y, x^y
#include <stdio.h>
#include <stdlib.h>
int main(void) {
int x=5,y=3;
int a,b,c,d,e,f,g;
a=!x;
b=~x;
c=x&y;
d=x|y;
e=x||y;
g=x^y;
printf("%d,%d,%d,%d,%d,%d,%d",a,b,c,d,e,f,g);
return EXIT_SUCCESS;
}
写一函数实现两个数的交换,交换变量利用位运算实现。
#include <stdio.h>
#include <stdlib.h>
int main(void) {
int a=1010;
int b=1100;
a=a^b;
b=b^a;
a=a^b;
printf("a=%d,b=%d",a,b);
return EXIT_SUCCESS;
}
编写一个函数用来实现左右循环移位,函数名为move,调用方法为move(value,n)其中value为要循环位移的数,
n为位移的位数。例如你n<0表示为左移;n>0为右移,n=4表示要右移4位,n=-3表示左移3位。
#include <stdio.h>
unsigned short moveleft(unsigned short ,int);
unsigned short moveright(unsigned short,int);
int main(int argc, char *argv[])
{
unsigned short a;
int n;
printf("输入一个函数:");
fflush(stdout);
scanf("%o",&a);
printf("输入一个数 n:");
scanf("%d",&n);
if (n > 0)
{
printf("result:%o\n",moveright(a,n));
}
else
{
n = -n;
printf("result:%o\n",moveleft(a,n));
}
system("pause");
}
unsigned short moveleft(unsigned short value,int n)
{
unsigned short z;
z = (value >> (16 - n)) | (value << n);
return z;
}
unsigned short moveright(unsigned short value ,int n)
{
unsigned short z;
z = (value >> n) | (value << (16 - n));
return z;
}
设计一个函数,使给出一个数的源码能得到该数的补码。
#include <stdio.h>
#include <stdlib.h>
int main(void) {
long n=100;
char buf[100];
ltoa(n,buf,2);
printf("yuanma:\n%s\n\n",buf);
n=~n+1;
ltoa(n,buf,2);
printf("buma:\n%s\n",buf);
return EXIT_SUCCESS;
}
(1)定义一个位域,位域列表中有4个变量,
(2)分别给位域中变量赋值,
(3)输出变量的值
#include <stdio.h>
#include <stdlib.h>
int main(void) {
struct bs{
unsigned a:1;
unsigned b:3;
unsigned c:5;
unsigned d:7;
}bit;
bit.a=4;
bit.b=8;
bit.c=13;
bit.d=34;
printf("%d,%d,%d,%d",bit.a,bit.b,bit.c,bit.d);
return EXIT_SUCCESS;
}