scanf("%s",string);
printf("The string entered is: %s,string);

User inputs: "Hi this is a string"

Output: "Hi"

scanf("%[^\n]",string);
printf("The string entered is: %s,string);

User inputs: "Hi this is a string"

Output: "Hi this is a string"

scanf("%[^ ]",string);
printf("The string entered is: %s" , string);

#include <stdio.h>

void strTrim(char* str1, char* str2)
 {
  int i = 0; //String 1's  counter variable
  int i2 = 0; //String 2's counter variable

  while (str1[i] != '\0') //While String 1 is not finished being processed
	{
	 if (str1[i] == ' ') //Search for spaces
	  {
	   i++; //If a space is found then keep searching string one for another character or NULL
	  }
	 else {str2[i2] = str1[i]; i++;i2++;} //If no space is found then copy the current character shown by str1[i] to str2[ii]
	}
 }


int main(void)
{
 char strA[129] = "\0";
 char strB[128] = "\0";

 printf("\nString to trim is: "); //Prompt user for String A (Type something like "This has spaces"
 scanf("%[^\n]",strA); //String A input, [^\n] scans ignoring newlines.  Tried with [^ ] to ignore spaces but that didn't work.
 strTrim(strA,strB); //Trim the spaces from String A and copy to String B
 printf("\nString B is: %s\n\n",strB); //Shows String B which is String A with all spaces remove
}