New in C, swapping names

[Johnston]

I'm new in C and was hoping for a little bit help.

I need to write a program that reverses names to go from Gary Bronson to Bronson, Gary.

Any help is greatly appreciate. I've been searching the Internet for help for a while nlw

 

[rahul.6sept]

Hi,

use reverse string algorithm.

regards,
rc

 

[navenmou]

Hi Johnston,

I think below code should work for your requirement..

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Code C - [expand]
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#include<stdio.h>
 
/* function to reverse a string */
 
void reverse(char *start, char *end);
 
/*Function to reverse words*/
 
void reversewords(char *s)
 
{
 
  char *word = s;
 
  char *temp = s;
 
  /*start reversing the individual words*/
 
  while( *temp )
 
  {
 
    temp++;
 
    if (*temp == '\0')
 
    {
      reverse(word, temp-1);
 
    }
 
    else if(*temp == ' ')
 
    {
 
      reverse(word, temp-1);
 
      word = temp+1;
 
    }
 
  } 
 
  reverse(s, temp-1);/*Reverse the resultant string from beginning to end including spaces*/
 
}
 
/*Function to reverse a string this is similar to earlier blog post to reverse a string */
 
void reverse(char *start, char *end)
 
{
 
  char temp;
 
  while (start < end)
 
  {
 
    temp = *start;
 
    *start++ = *end;
 
    *end-- = temp;
 
  }
 
}
 
int main()
 
{
 
  char s[] = "Neil Peart rocks YYZ";
 
  char *temp = s;
 
  printf("Original string: %s\n",s);
 
  reversewords(s);
 
  printf("Reverse word string: %s\n", s);
 
  return 0;
 
}

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