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drjulio2002

simple getchar() and putchar() program problem!

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Hello Everyone! I've been having a problem trying to figure out how to write this program, to copy it's input to it's output, replacing two or more blanks by a single blank!
#include <stdio.h>

// Copy input to output; replacing one or more blanks by a single blank
main()
{
      int c, bl;
      
      bl = 0;
      while((c = getchar()) != EOF)
      {
          if(c == ' ')
           { 
            bl++;
           }
          if(bl > 1)
           {
            c = ' ';
           } 
           putchar(c);
      }     
      system("PAUSE");
}

This is what I come up with. They're other ways but they just look very funny and crazy soluctions. Am I thinking how to solve this problem in the wrong way? What can I do? Thanks!

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You have the logic wrong. Think about what happens when you find two spaces.


You probably want something like this:
[source lang=cpp]

#include <stdio.h>

// Copy input to output; replacing one or more blanks by a single blank
main()
{
int c, bl;

bl = 0;
while((c = getchar()) != EOF)
{
if(c == ' ')
{
bl++;
}
else
bl=0;
if (bl<=1)
putchar(c);
}
system("PAUSE");
}





I hope the code's correct, I havn't tries it.

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