题解 | #序列中删除指定数字#

#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main(void)
{
    int arr1[20] = { 0 };
    int arr2[20] = { 0 };
    int n = 0;
    int m = 0;
    int a = 0;
    int i = 0;
    int j = 0;
    int sign = 0;
    int sum = 0;
    //数组中放入n个整数
    scanf("%d", &n); 
    for (i = 0; i < n; i++)
    {
        //放入的每个数字
        scanf("%d", &m);
        arr1[i] = m;
    }
    //想要删除的那个数字
    scanf("%d", &a);

    //遍历数组arr1，如果没有碰到我要删除的数字，就把数字存放到arr2中
    for (i = 0; i < n; i++)
    {
        if (arr1[i] != a) 
        {
            sign = 1;     
            arr2[j] = arr1[i];
            j++;
            sum++;
        }
    }
    //arr1中有我要删除的数字
    if (sign == 1)  
    {
        for (i = 0; i < sum; i++)
        {
            printf("%d ", arr2[i]);
        }
    }

    //arr1中没有我要删除的数字
    else          
    {
        for (i = 0; i < n; i++)
        {
            printf("%d ", arr1[i]);
        }
    }
    return 0;
}