//#include "stdafx.h"//If the vc++6.0, with this line.

#include "stdio.h"

int main(void){

    char *a[33]={"NUL(null)","SOH(strt of heading)","STX(start of text)",

        "ETX(end of text)","EOT(end of transmission)","ENQ(enquiry)",

        "ACK(acknowledge)","BEL(bell)","BS(backspace)",

        "TAB(horizonfal tab)","LF(NL line feed, new_line)","VT(vertical tab)",

        "FF(NP form feed, new page)","CR(carriage return)","SO(shift out)",

        "SI(shift in)","DLE(data link escape)","CC1(device control 1)",

        "DC2(device control 2)","DC3(device control 3)","DC4(device control 4)",

        "NAD(negative acknowledge)","SYN(synchronous idle)","ETB(end of trans, block)",

        "CAN(cancel)","EM(end of medium)","SUB(substitute)",

        "ESC(escage)","FS(file separator)","GS(group separator)",

        "RS(record separator)","US(unit separator)","SPACE"},

        i;

    printf("Dec\tHex\tChar\n");

    for(i=0;i<33;printf("%d\t%X\t%s\n",i++,i,a[i]));

    for(;i<127;printf("%d\t%X\t%c\n",i++,i,i));

    printf("%d\t%X\t%s\n",i,i,"DEL");

    return 0;

}

参考方法：

#include<stdio.h>
#include <time.h>
#include <stdlib.h>

void reverse(int *numArray, int k);

int main()
{
    srand((int)time(0));
    int *numArray = NULL, m, n;
    printf("产生多少个1-100的随机数组元素？\n");
    scanf("%d", &n);
    numArray = (int*)calloc(n, sizeof(int));
    for (m = 0; m < n; ++m)
        numArray[m] = rand() % 101;//1-100之间随机数
    printf("逆序前：\n");
    for (m = 0; m < n; ++m)
        printf("%-4d", numArray[m]);
    reverse(numArray, n);
    printf("\n逆序后：\n");
    for (m = 0; m < n; ++m)
        printf("%-4d", numArray[m]);
    printf("\n");
    return 0;
}

void reverse(int *numArray, int k)
{
    int i, j;
    if (k % 2)//元素个数为奇数个时
    {
        for (i = 0, j = k - 1; i < k / 2 && j > k / 2; ++i, --j)
        {
            numArray[i] += numArray[j];
            numArray[j] = numArray[i] - numArray[j];
            numArray[i] -= numArray[j];
        }
    }
    else
    {
        for (i = 0, j = k - 1; i < k / 2 && j >= k / 2; ++i, --j)
        {
            numArray[i] += numArray[j];
            numArray[j] = numArray[i] - numArray[j];
            numArray[i] -= numArray[j];
        }
    }
}

参考方法：

#include<stdio.h>
void reverse_print(int a[],int n);
int main(void)
{
    int a[10] = {0,1,2,3,4,5,6,7,8,9};
    printf("原始数组是:\n");
    for(int i = 0; i < 10;i++)
        printf("%-3d",a[i]);
    printf("\n排序后的数组:\n");
    reverse_print(a,10);
    return 0;
}

void reverse_print(int a[],int n)
{
    int i = 0;
    int j = n - 1;
    while(i < j)
    {
        if(i < j)
        {
            int temp;
            temp = a[i];
            a[i] = a[j];
            a[j] = temp;
        }
        i++;
        j--;
    }
    for(i = 0; i < n; i++)
        printf("%-3d",a[i]);
}

参考方法:

#include<stdio.h> 
#include<stdlib.h>
#include<time.h>
int main()
{
    int i=0;
    int in[10];
    srand(time(NULL));
    printf("原数组:\n");
    for(i=0;i<10;i++){
        in[i]=rand()%11;
        printf("%d ",in[i]);
    }
    printf("\n逆序后数组:\n");
    for(i=9;i>=0;i--)
        printf("%d ",in[i]);
    return 0;    
} 

参考方法：

#include<stdio.h>

int main()
{
    int a[10]={1,3,9,4,5,6,7,8,2,10};
    int *begin, *end;
    int temp,i;
    for(i=0;i<10;i++)
    {
        printf("%d ",a[i]);
    }
    printf("\n");
    begin=&a[0];
    end=&a[9];
    while(end>begin)
    {
        temp=*begin;
        *begin=*end;
        *end=temp;
        begin++;
        end--;
    }
    for(i=0;i<10;i++)
    {
        printf("%d ",a[i]);
    }
}