Thread: reducing string length if a space is read

while using fgets to get the input from the user I am trying to reduce the string length of the array by one when a space is read.

this is a small portion of the code.

Code:

while(fgets(a,255,stdin)){
        
        i= 0;
        if(a[i]==' '){
            length = strlen(a)-1;
            
        }
        else
        continue;
    }

is this the right Idea?

I tried it but now I don't get any output when I try and print array elements.

You would need to show us a small working program. We don't know if or how 'a' was defined. ('a' is not a good name for an array to hold a string. "str", or something more descriptive would be better.)

You don't "reduce the string length of the array" by simply subtracting 1 from the strlen() of the String. You are only reducing the strlen() if the first char in the array is a space. What about other spaces later in the same string?

You need to explain better what you are trying to do.

Code:

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

  int main() {

    char array[20];
    int length = 0;
    int i;
    int key = 256;

    printf("input:  ");

    fgets(array, 20, stdin);

    length = strlen(array) - 1;

    key = key % length;

    if (key > 0) {

      for (i = 0; i < length; i++) {

        if (array[i] == ' ') {

          printf("%c", array[i]);

          continue;

        }
        array[i] = array[i] + key;

        printf("%c", array[i]);
      }

    }

    return 0;
  }

so this code gets user input string
then 256 mod input length will be calculated. if the result is 3 all letters will be shifted by three. however when the input is something like this "hey whatsup" the length should be 10 and not 11. the space get's counted aswell.

I am trying to tell the program not to add spaces to the input length. But it should print out the space , which i managed to implement.

I can't seem to figure out how to tell fgets to remove spaces from the length.

yeah that's what I am trying to do. shifting as in caesar cipher