c语言 7-3

1、

#include <stdio.h>

unsigned rrotate(unsigned x, int n)
{
    printf("rrotate = %u
", x >> n);
}

unsigned lrotate(unsigned x, int n)
{
    printf("lrotate = %u
", x << n);
}

int main(void)
{
    unsigned x;
    int n;
    puts("please input an unsigned integer and an integer.");
    printf("x = "); scanf("%u", &x);
    printf("n = "); scanf("%d", &n);
    
    rrotate(x, n);
    lrotate(x, n);
    
    return 0;
}

2、

#include <stdio.h>

unsigned rrotate(unsigned x, int n)
{
    return x >> n;
}

unsigned lrotate(unsigned x, int n)
{
    return x << n;
}

int main(void)
{
    unsigned x, n, a;
    puts("please input two unsigned integers.");
    printf("x = "); scanf("%u", &x);
    printf("n = "); scanf("%u", &n);
    
    for(;;)
    {
        puts("a = 1: move right;  a = 2: move left.");
        printf("a = "); scanf("%u", &a);
        if(a == 1 || a == 2)
        {
            break;
        }
        puts("input error. try again.");
    }
    if(a == 1)
    {
        printf("right move result: %u
", rrotate(x, n));
    }
    else
    {
        printf("left move result: %u
", lrotate(x, n));
    }
    return 0;
}

3、

#include <stdio.h>

unsigned rrotate(unsigned x, int n)
{
    return x >> n;
}

unsigned lrotate(unsigned x, int n)
{
    return x << n;
}

int main(void)
{
    unsigned x;
    int n, a;
    puts("please input an unsigned integer and an integer.");
    printf("x = "); scanf("%u", &x);
    printf("n = "); scanf("%d", &n);
    
    while(!0)
    {
        puts("a = 1: move right;   a = 2: move left.");
        printf("a = "); scanf("%d", &a);
        
        if(a == 1 || a == 2)
        {
            break;
        }
        puts("input error, try again.");
    }
    if(a == 1)
    {
        printf("right move result: %u
", rrotate(x, n));
    }
    else
    {
        printf("left move result: %u
", lrotate(x, n));
    }
    return 0;
}

4、

#include <stdio.h>

unsigned rrotate(unsigned x, int n)
{
    return x >> n;
}

unsigned lrotate(unsigned x, int n)
{
    return x << n;
}

int main(void)
{
    unsigned x;
    int n, a;
    puts("please input two nonnegative integers.");
    printf("x = "); scanf("%u", &x);
    printf("n = "); scanf("%d", &n);
    
    do
    {
        puts("a = 1: move right.  a = 2: move left.");
        printf("a = "); scanf("%d", &a);
        if(a != 1 && a != 2)
            puts("input error; try again.");
    }
    while(a != 1 && a != 2);
    
    if(a == 1)
    {
        printf("right move result: %u
", rrotate(x, n));
    }
    else
    {
        printf("left move result: %u
", lrotate(x, n));
    }
    return 0;
}

5、

#include <stdio.h>

unsigned rrotate(unsigned x, int n)
{
    return x >> n;
}

unsigned lrotate(unsigned x, int n)
{
    return x << n;
}

int main(void)
{
    unsigned x;
    int n;
    puts("please input the value of unsigned x and int n.");
    printf("x = "); scanf("%u", &x);
    printf("n = "); scanf("%d", &n);
    
    printf("%u move to right %d bits is :%u
", x, n, rrotate(x, n));
    printf("%u move ro left %d  bits is :%u
", x, n, lrotate(x, n));
    
    return 0;
}