#include<stdio.h>
#include<conio.h>

int strconcat(char *, char *);

void main()
{
	char array[4]={'B','c','e','\0'};
	char arr[16] = "BceProgram";
	clrscr();


	strconcat(arr,array);

	printf("\narr = %s", arr);

	strconcat(arr,"COMSATS");

	printf("\narr = %s", arr);
}


int strconcat(char *s1, char *s2)
{

	while (*s1 != '\0')
		{
		s1++;
		   if(*s1=='\0')
		      while(*s2!='\0')
		      {
		      *s1=*s2;
		      s1++;
		      s2++;
		      }
		}

}