C program remove spaces, blanks from a string

C programming code

#include <stdio.h>
 
int main()
{
   char text[100], blank[100];
   int c = 0, d = 0;
 
   printf("Enter some text\n");
   gets(text);
 
   while (text[c] != '\0')
   {
      if (!(text[c] == ' ' && text[c+1] == ' ')) {
        blank[d] = text[c];
        d++;
      }
      c++;
   }
 
   blank[d] = '\0';
 
   printf("Text after removing blanks\n%s\n", blank);
 
   return 0;
}

If you want you can copy blank into text string so that original string is modified.

Download Remove spaces program.

Output of program:

C programming code using pointers

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define SPACE ' '
 
int main()
{
   char string[100], *blank, *start;
   int length, c = 0, d = 0;
 
   printf("Enter a string\n");
   gets(string);
 
   length = strlen(string);
 
   blank = string;
 
   start = (char*)malloc(length+1);
 
   if ( start == NULL )
      exit(EXIT_FAILURE);
 
   while(*(blank+c))
   {
      if ( *(blank+c) == SPACE && *(blank+c+1) == SPACE )
      {}
      else
      {
         *(start+d) = *(blank+c);
  d++;
      }
      c++;
   }
   *(start+d) = '\0';
 
   printf("%s\n", start);
 
   free(start);     
 
   return 0;
}