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  1. #include<stdio.h>
  2. #define NONBLANK '-'
  3.  
  4. int main(void)
  5. {
  6.   int c,lastc;
  7.  
  8.   lastc=NONBLANK;
  9.  
  10.   while((c=getchar())!=EOF)
  11.   {
  12.     if(c==' ')
  13.     {
  14.       if(lastc!=' ')
  15.         putchar(c);
  16.     }
  17.     else
  18.       putchar(c);
  19.  
  20.     lastc=c;
  21.   }
  22. return 0;
  23. }
Success #stdin #stdout 0s 4396KB
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https://ideone.com/591kkl
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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