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  1. #include <stdio.h>
  2.  
  3. #define SPACE ' '
  4.  
  5. int main(void)
  6. {
  7.     int space = 0;
  8.  
  9.     int c;
  10.     while ((c = getchar()) != EOF) {
  11.         if (c == SPACE) {
  12.             if (space == 0) {
  13.                 ++space;
  14.                 putchar(c);
  15.             } else if (space > 0) {
  16.                 ++space;
  17.             }
  18.         } else {
  19.             space = 0;
  20.             putchar(c);
  21.         }
  22.     }
  23.  
  24.     return 0;
  25. }
Success #stdin #stdout 0s 9424KB
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https://ideone.com/DgD8SY
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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