#include <iostream>using namespace std;int merge2(int a[],int n,int b[],int m,int s[]){    int i=0,j=0;        while(i<n&&j<m)    {        if(a[i]<b[j])        {            s[i+j]=a[i];            i++;                    }        else        {            s[i+j]=b[j];            j++;                    }    }    while(i<n)    {        s[i+j]=a[i];        i++;    }    while(j<m)    {        s[i+j]=b[j];        j++;            }        return 1;    }int merge3(int *a,int num_a,int *b,int num_b,int *c,int num_c,int *d){    int p=0,q=0;    int res[50];    merge2(a,num_a,b,num_b,res);//     for (int i=0;i<num_a+num_b;i++)//     {//         cout<<res[i]<<"  ";//     }    merge2(res,(num_a+num_b),c,num_c,d);    return 0;}int main(){    int v1[]={32,43,46};    int v2[]={2,5,6,8,22,45};    int v3[]={3,9,21,30};    int v4[100];    int a=3,b=6,c=4;    merge3(v1,a,v2,b,v3,c,v4);    for (int i=0;i<a+b+c;i++)    {        cout<<v4[i]<<"  ";    }}