Untitled

#include<stdio.h>
#include<string.h>
void DFA(char[]);
int main()
{
  char str[50];
  printf("Enter the string that is to be checked\n");
  scanf("%s",str);
  DFA(str);
}

void DFA(char str[])
{
    int cstate=0;
   for(int i=0;i<strlen(str);i++)
   {
           
           if(cstate==0)
           {
              if(str[i]=='a')
              {
                cstate=1;
              }
              else
              {
                cstate=0;
              }
           }
           else if(cstate==1)
           {
              if(str[i]=='a')
              {
               cstate=2;
              }
              else
              {
               cstate=0;
              }
           }
           else if(cstate==2)
           {
             if(str[i]=='a'||str[i]=='b')
             {
               cstate=2;
             }
           }
           
   }   
        
    
   
   if(cstate==2)
   {
       printf("The string is accepted\n");
       
   }
   else
   {
       printf("The string is not accepted\n");
       
   }
}