c_exercises/1-13.c

#include <stdio.h>

// version 1.0
#define ARR_LENGTH 20
int main(){
  int arr[ARR_LENGTH];
  int c, index, i, dashes, nc;
  index = i = dashes = nc = 0;
  while ((c = getchar()) != '\n' && i < ARR_LENGTH-1){
    if (c == ' ' && nc != 0){
      arr[index]=nc;
      nc=0;
      index++;
    }
    else {
      nc++;
    }
  }
  while (i < index){
    while (dashes<arr[i]){
      putchar('-');
      dashes++;
    }
    dashes=0;
    putchar('\n');
    i++;
  }
  return 0;
}

// version 2.0
int main(){
  int c;
  while ((c = getchar()) != '\n'){
    if (c != ' '){
      putchar('-');
    }
    else {
      putchar('\n');
    }
  }
  putchar('\n');
  return 0;
}