C Brain Teasers: Exercise Your Mind/

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Discussion: You See It Everywhere

Discussion: You See It Everywhere

Execute the code to understand the output and gain insights into sequence generation.

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Run the code

Now, it's time to execute the code and observe the output.

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#include <stdio.h>
int main()
{
  int f, n;
  int count;
  f = n = 1;
  count=0;
  while( count < 20 ) {
    printf("%d ", f);
    f+=n;
    printf("%d ", n);
    n+=f;
    count+=2;
  }
  putchar('\n');
  return(0);
}

Understanding the output

The code outputs the first 20 values of the Fibonacci sequence:

1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 1597 2584 4181 6765
Code output
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