C language USES the sequence table to realize the function of telephone book

Brief introduction:

Implementing the function of telephone book with sequence Table (C language)

The phone book has the following four functions:

1. Create a phone book with a name and phone number
2. Insert a name and phone number in the specified location
3. Delete 1 name and phone number in the specified location
4. Print out a phone book

Code:

// Among them the color I added the function for the sake of aesthetics, and I can relate everything in the code if It doesn't feel necessary color Delete all of them 

#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <windows.h>
using namespace std;
const int N = 1000+10;
int n;
struct Node
{
  char name[100];
  char number[20]; 
};
typedef struct 
{
  struct Node* mylist;
  int len;
  int listsize;
}sqlist;

void Init(sqlist &s1);
void Creat(sqlist &s1);
void Delet(sqlist &s1);
void Add(sqlist &s1);
void Print(sqlist &s1);
void color(const unsigned short color1);

int main()
{
  sqlist s1;
  Init(s1);
  color(10);
  printf("\n\n\n\n    --------------- WSM's phonetxt-------------------\n\n");
  printf("       |You could chose these ops:      |\n");
  printf("       |  1.Creat the phonetxt        |\n");
  printf("       |  2.Delet the member in the phonetxt |\n");
  printf("       |  3.Add the member in the phonetxt  |\n");
  printf("       |  4.Print the phonetxt        |\n");
  color(14);
  printf("\n\n\n\n   Now,you can enter an optiton:");

  int op;
  while(scanf("%d",&op)!=EOF)
  {
    if(op==1) Creat(s1);
    else if(op==2) Delet(s1);
    else if(op==3) Add(s1);
    else if(op==4) Print(s1);
    else 
    {
      color(4);
      printf("   You input is invalid,reinput please:)\n");
      color(14);
    }
    printf("\n   Now,you can enter an optiton:");
  }
  return 0;
}

void Init(sqlist &s1)
{
  s1.mylist = (Node *)malloc(100*sizeof(Node));
  s1.len = 0;
  s1.listsize = 100;
  return;
}
void Creat(sqlist &s1)
{
  s1.len = 0;
  cout<<"   how many numbers do you want to built:";
  scanf("%d",&n);
  cout<<"   please input their informations:"<<endl;
  for(int i=1;i<=n;i++)
  {
     printf("    input the %d person name:",i);
     scanf(" %s",s1.mylist[i-1].name);
     printf("    input the %d person phonenumber:",i);
     scanf(" %s",s1.mylist[i-1].number);
     s1.len++;
  }
  color(9);
  cout<<"   well done,the phonetxt has been created!!!"<<endl;
  color(14);
  return;
}

void Delet(sqlist &s1)
{
  cout<<"   please enter the number you want to delet:";
  heredelet:
  int x;
  scanf("%d",&x);
  if( x<1 || x>s1.len) 
  {
    color(4);
    cout<<"   sorry,your input is invalid,please input again:";
    color(14);
  goto heredelet;
  }

  struct Node *p,*q;
  p = &(s1.mylist[x-1]);
  q = s1.mylist + s1.len -1;
  for(++p;p<=q;++p) *(p-1) = *p;
  --s1.len;

  color(9);
  cout<<"   well done,the member has been deleted!!!"<<endl;
  color(14);
  return;
}
void Add(sqlist &s1)
{
  cout<<"   please enter the number you want to add:";
  hereadd:
  int x;
  scanf("%d",&x);
  if( x<1 || x>s1.len+1) 
  {
    color(4);
    cout<<"   sorry,your input is invalid,please input again:";
    color(14);
    goto hereadd;
  }

  struct Node cur;
  printf("    input the person name:");
  scanf(" %s",cur.name);
  printf("    input the person phonenumber:");
  scanf(" %s",cur.number);

  struct Node *p,*q;
  q = &(s1.mylist[x-1]);
  for(p=&(s1.mylist[s1.len-1]);p>=q;--p) *(p+1) = *p;
  *q = cur;
  ++s1.len;

  color(9);
  cout<<"   well done,the member has been added!!!"<<endl;
  color(14);
  return;
}
void Print(sqlist &s1)
{
  color(8);
  printf("    Name------phonenumber\n");

  struct Node *q = s1.mylist;
  for(q;q<s1.mylist+s1.len;q++)
  {
    printf("      %s    %s\n",q->name,q->number);
  }
  color(14);
  color(9);
  cout<<"   well done,the phonetxt is above!!!"<<endl;
  color(14);
  return;
}

void color(const unsigned short color1)
{    
  if(color1>=0&&color1<=15)
  SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), color1);
  else
  SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 7);
  return;
}