Write a C program to copy one string to another string.

Without using pointer:

/**
 * C program to copy one string to another string using while loop
 */

#include 
#define MAX_SIZE 100 // Maximum size of the string

int main()
{
    char text1[MAX_SIZE];
    char text2[MAX_SIZE];
    int i;
    
    /* Input string from user */
    printf("Enter any string: ");
    gets(text1);
    
    /* Copy text1 to text2 character by character */
    i=0;
    while(text1[i] != '\0')
    {
        text2[i] = text1[i];
        i++;
    }

    //Makes sure that the string is NULL terminated
    text2[i] = '\0';

    printf("First string = %s\n", text1);
    printf("Second string = %s\n", text2);
    printf("Total characters copied = %d\n", i);

    return 0;
}

Using pointer:

/**
 * C program to copy one string to another string using pointer
 */

#include 
#define MAX_SIZE 100 // Maximum size of the string

int main()
{
    char text1[MAX_SIZE], text2[MAX_SIZE];
    char * str1 = tex....

Without using pointer:

/**
 * C program to copy one string to another string using while loop
 */

#include 
#define MAX_SIZE 100 // Maximum size of the string

int main()
{
    char text1[MAX_SIZE];
    char text2[MAX_SIZE];
    int i;
    
    /* Input string from user */
    printf("Enter any string: ");
    gets(text1);
    
    /* Copy text1 to text2 character by character */
    i=0;
    while(text1[i] != '\0')
    {
        text2[i] = text1[i];
        i++;
    }

    //Makes sure that the string is NULL terminated
    text2[i] = '\0';

    printf("First string = %s\n", text1);
    printf("Second string = %s\n", text2);
    printf("Total characters copied = %d\n", i);

    return 0;
}

Using pointer:

/**
 * C program to copy one string to another string using pointer
 */

#include 
#define MAX_SIZE 100 // Maximum size of the string

int main()
{
    char text1[MAX_SIZE], text2[MAX_SIZE];
    char * str1 = text1;
    char * str2 = text2; 
    
    /* Input string from user */
    printf("Enter any string: ");
    gets(text1);
    
    /* Copy text1 to text2 character by character */
    while(*(str2++) = *(str1++));

    printf("First string = %s\n", text1);
    printf("Second string = %s\n", text2);

    return 0;
}