#include<stdio.h>
#include<conio.h>
void
main()
{
int
i=0,flag=0;
char
s[50];
clrscr();
printf("\n
enter the string:-");
gets(s);
while(s[i]!=NULL)
{
if(s[i]=='a')
{
s[i]='*';
}
i++;
}
printf("\n
the string is %s",s);
getch();
}
/* output
enter the string:- india
the string is indi*
*/
