How do I make a while loop that will keep taking string input until i input nothing?

Question

I'm working in C and I want to make a loop that will make my code keep asking for input until I input ""?

char inputarray[1000];
int size;
printf("\nEnter a string: ");
fgets(inputarray,1000,stdin);  
size = strlen(inputarray);
printf("%d \n", size);
printf("%s \n", inputarray);

Also I'm new to stack overflow and don't know how to make a new line when inputting code. Will be glad to hear any solutions — LSAR bomarish
– LSAR bomarish, Commented Nov 14, 2020 at 17:52
You might want to check out about memcmp or strcmp functions — alex01011
– alex01011, Commented Nov 14, 2020 at 18:12
Just as a side note: You should normally always check the return value of fgets to see if an end-of-file or error condition occurred. For example, if standard input has been redirected to come from a file, then it is likely for an end-of-file condition to occur. However, this is not related to your problem, so you can ignore this advice for now. — Andreas Wenzel
– Andreas Wenzel, Commented Nov 14, 2020 at 18:17

alex01011 · Accepted Answer · 2020-11-14 18:30:42Z

1

I guess you are looking for something like this:

#include <stdio.h>
#include <string.h>

int main(void)
{
  char inputarray[1000];
  int size;

  do
  {
    printf("\nEnter a string: ");
    if(!fgets(inputarray,1000,stdin)) /* Check for EOF , or NULL upon return */
    {
      return -1;
    }
    size = strlen(inputarray)-1; /* Ignoring '\n' */
    printf("%d \n", size);
    printf("%s ", inputarray); /* No need for '\n' since 
                                fgets stores every character including newline in the buffer */

  }while(strcmp(inputarray,"\n")); /* Meaning strcmp doesnt return 0 */

  return 0;
}

edited Nov 14, 2020 at 18:30

answered Nov 14, 2020 at 18:21

alex01011

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