void check(char a[])
{
    char c;
    int len,i,flag1=0,flag2=0,flag3=0,flag4=0;
    len=strlen(a);
    if(len<6)
    flag1=1;
    else
    {
        for(i=0;i<len;i++)
        if((a[i]>=48&&a[i]<=58))
        {
            flag2=0;
            break;
        }
        else
        flag2=1;
        for(i=0;i<len;i++)
        if((a[i]>=65&&a[i]<=90))
        {
            flag3=0;
            break;
        }
        else
        flag3=1;
        for(i=0;i<len;i++)
        if(a[i]=='#'||a[i]=='$'||a[i]=='*'||a[i]=='&')
        {
            flag4=0;
            break;
        }
        else
        flag4=1;
    }
    if(flag1==1||flag2==1||flag3==1||flag4==1)
    printf("\nWrong password\n");
    else
    printf("your password is successfully created\n");
    return;
}