C Program to concatenate two strings using built in functions

Program

#include<stdio.h>
#include<string.h>
void main()
{
	char str[20], dest_str[40];
	printf("Enter string one:\t");
	scanf(" %s", str);
	printf("Enter string two:\t");
	scanf("%s", dest_str);
	strcat(dest_str, str);
	printf("Concatenated string is: %s\n", dest_str);
}

Output

Enter string one:	Delhi
Enter string two:	New
Concatenated string is: NewDelhi