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C++ Password Generator

C++ Program to generate random password

In this example, we will see a C++ program through which we can generate a random password which would have lowercase alphabets - a to z, upperCase alphabets - A to Z, numbers - 0 to 9, and some special symbols - !,@,#,$,%,&.

Program:


#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std; 
static const char alphnum[]="0123456789" "!@#$%^&*" "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz"; 
int strLen=sizeof(alphnum)-1; 
char GenRand()
{ 
return alphnum[rand()%strLen]; 
} 
int main() 
{ 
int n,c=0,s=0;
srand(time(0));
cout<<"Enter the length of the password required:";
cin>>n;
cout<<n<<endl;
cout<<"Your Password is:";
N:
char C;
string D;
for(int z=0; z < n; z++) 
{ 
C=GenRand();
D+=C;
if(isdigit(C))
{
c++;
}
if(C=='!' || C=='@' || C=='$' || C=='%' ||  C=='^' || C=='&'|| C=='*'|| C=='#')
{
s++;
}
}
if(n>2 && (s==0 || c==0))
{
goto N; 
}
cout<<D; 
return 0; 
}

Output:
Enter the length of the password required:10
10
Your Password is:m!warsg9nl

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