C program to appends specified number of characters using strncat() function

\* C program to appends specified number of characters using strncat() function *\

# include < stdio.h >
# include < conio.h >
# include < string.h >
int   main( )
{

char str1[50], str2[50] ;
int n ;
printf ("\n Enter a string : ") ;
scanf("%s", str1 ) ;
printf("\n Enter the string for Add : ") ;
scanf("%s", str2 ) ;
printf("\n Enter the digit add in sting : ") ;
scanf("%d", &n ) ;

strncat(str1, str2, n ) ;
printf("\n String after concatenation: %s\n", str1 ) ;
return 0 ;

}