while loop in c | check password using while loop example| implement strcmp| chararray in c language

while loop in c | check password using while loop example| implement strcmp|  

#include<stdio.h>
#include<conio.h>
void main()
{
void pass();
clrscr();
pass();
printf("\n\nNow you can proceed...........\n");
getch();
}
void pass()
{
char ar[30],ch;
int i=0;
printf("\n\nEnter password\n");
while(1)
{
ch=getch();
if(ch==13)
break;
else
{
ar[i]=ch;
i++;
printf("*");
}
}
ar[i]='\0';
if(strcmp(ar,"username")==0)
return;
else
{
printf("Invalid password try again\nPress any key to continu\n");
getch();
pass();
}
}

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