String concatenation (To Add two string)

#include<stdio.h>
#include<conio.h>
void main()
{
char name1[20],name2[20];
int i,j;
clrscr();
printf("Enter first string\n");
scanf("%s",name1);
printf("Enter second string\n");
scanf("%s",name2);
i=0;
while(name1[i]!='\0')
i++;
for(j=0;name2[j]!='\0';j++)
{
name1[i]=name2[j];
i++;
}
name1[i]='\0';
printf("String after concatenation=%s",name1);
getch();
}