Method explanation:
Method description:
void changeCharacter(char* ar, int s, int k)//defining a method changeCharacter that takes three parameters
{
 for(int j = 1; ar[j]!='\0'; j++)//defining a for loop for 3rd character value in array Â
 {
   if(j%3== 0)//use if block that check 3rd character value in array Â
   {
     ar[j-1] = k; //Changing the 3rd character in array
   }
 }
}
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Program: brainly.com/question/12975989