Q:

C Program To Generate IP Addresses (Internet Protocol IPv4 & IPv6 ) Using For Loop

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ghaidaib
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2022-05-12
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Write a C Program To Generate IP Addresses (Internet Protocol IPv4 & IPv6 ) Using For Loop .

 

Logic : 

Logic is very simple first print random Number so i use rand() Function But always shows same value if you run your code again and again it shows same or repeat Output that's why i use srand() .

so for print IPv4 we need to print multiple of 4 random number cause we need output in this format 
 
IPv4 :- What is IPv4 Format ?
 
64.92.8.122 This is a IPv4 Format or Number from 0 to 255 or you can say 0.0.0.0 to 255.255.255.255 Below Code is Printing a IPv4 .
 
 
Pv6 :- What is IPv6 Format ?
 
5677.a66c.4410.cc07.8487.8a9a.bd83.7e05 This is a IPv6 Format or we also use hexadecimal Number IPv6 thats a reason IPv6 is More Secure Than IPv4 .Below Code For IPv6 But we also Use A Character array See the Full Code .
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ghaidaib
2022-05-12
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#include<stdio.h>
#include<string.h>
#include<math.h>
void main()
{
    int i,j,k,dig,no,nu,cnt=0;
    char str[] ={'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
    char ch;
    
    printf("\nEnter How Many IP Addresses You Want To Print :");
    scanf("%d",&no);

 printf("\n\nWhat You Want ipv4 Or Ipv6 Enter (4 Or 6) :");
    scanf("%d",&nu);
    
 switch(nu)
    {
     case 4:
      srand(time(NULL));
      for(i=0;i<no;i++)
      {
       for(j=0;j<4;j++)
       {
    cnt=rand()%255;
    printf("%d",cnt);
    if(j<3)
    printf(".");
    }
    printf("\n");
   }
   break;
  case 6 :
      srand(time(NULL));
      for(i=0;i<no;i++)
      {
       for(j=0;j<8;j++)
       {
        for(k=0;k<4;k++)
        {
     ch=str[rand()%16];
     printf("%c",ch);
     }
    if(j<7)
    printf(".");
    }
    printf("\n");
   }
   break;
     default :printf("\nEnter ipv Either 4 or 6\n\n"); 
 }
    
    getch();
}

 

 

Output:

IPv4:

Enter How Many IP Addresses you Want To Print :10

What you Want ipv4 Or ipv6 Enter (4 or 6):4

77.99.252.203

64.92.8.122

161.197.253.87

200.68.72.231

145.162.7.252

51.2.221.222

13.226.35.192

20.253.34.157

139.43.189.206

146.59.174.112

IPv6:

Enter How Many IP Addresses You Want To Print :10

What You Want ipv4 Or Ipv6 Enter (4 Or 6) :6

7c8c.d103.bf59.3940.c1c2.b70b.ba2b.a601

28e0.9e35.e8e1.231e.4d1f.41af.bda6.3b76

356d.4922.1033.3427.1366.4150.e061.bd7e

3db7.6d98.ecb1.0d91.0f75.0d5e.db08.876b

522b.fb3d.7ff7.c89d.7028.d76a.262a.e963

b8ea.428b.173d.fca6.ccea.3545.b709.06cb

eb52.ddee.41b3.d6a9.2836.d8b9.fb2f.1fa0

af27.d051.105e.6f89.7bf5.3ae2.6017.fb79

ba08.a59c.6eac.d255.e4a1.f845.85c8.141c

e248.7d4d.cfa9.1fef.4813.0589.a41b.8276

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