strnset(): setting n chars of a string

#include<stdio.h>
#include<string.h>
int main()
{
   char str1[20] = "plus2net";
   char str2='*';
   printf("Original string : %s \n", str1);
   strnset(str1,str2,4);
   printf("After  strset() : %s",str1);
   return 0;
}

Original string :plus2net
After strnset() : ****2net

strnset(main_string, set_string,n);

Example: Custom Implementation of strnset()

#include <stdio.h>

void custom_strnset(char *str, char ch, int n) {
    for (int i = 0; i < n && str[i] != '\0'; i++) {
        str[i] = ch;
    }
}

int main() {
    char str[] = "Hello World!";
    custom_strnset(str, '*', 5);
    printf("Modified string: %s\n", str);  // Output: ***** World!
    return 0;
}

Modified string: ***** World!

Example: Handling Empty Strings and Shorter Length

#include <stdio.h>

void custom_strnset(char *str, char ch, int n) {
    for (int i = 0; i < n && str[i] != '\0'; i++) {
        str[i] = ch;
    }
}

int main() {
    char empty_str[] = "";
    custom_strnset(empty_str, '*', 3);
    printf("Empty string result: %s\n", empty_str);  // Output: (empty)

    char short_str[] = "Hi";
    custom_strnset(short_str, '*', 5);  // Attempting to set more than the string length
    printf("Short string result: %s\n", short_str);  // Output: **
    return 0;
}

Empty string result: 
Short string result: **