Basic operation of Character array

#include <stdio.h>
#include <string.h>

void Main () {

/**
Char ch[]= "China\nbeijin";
Char ca= ' a ';

Char c[12];
Gets (c);

Puts (CH);
Puts (c);
*/

Char ch1[30]={"China Beijing"};
Char ch2[]={"Caoyangqu"};
Char ch3[30];
Character array connection, CH2 connected to CH1
strcat (CH1,CH2)

printf ("%s\n", strcat (CH1,CH2));

Copy of character array, CH1 copy to CH3
strcpy (CH3,CH1);
strcpy (CH3,CH1);
printf ("%s\n", CH3);

A comparison of character arrays. Ch1>ch2, returns a positive number; CH1&LT;CH2, returns a negative number; Ch1=ch2, returns zero
strcmp (CH1,CH2)
printf ("%d\n", strcmp (CH1,CH2));

The length of the character array
Strlen (CH1)
printf ("%d\n", strlen (CH1));

The character array becomes lowercase
STRLWR (CH2)
The character array becomes uppercase
STRUPR (CH2)

printf ("%s\n", STRLWR (CH2));
printf ("%s\n", Strupr (CH2));
}

Basic operation of Character array