Question

I have to program a little program that show a Fibonacci sequence from 1 to n.
1 to 18 works great. But from 19 the program does nothing at all and just exit as it’s done.
I can not find the error… so please give me an hint.

#include<sys/types.h>
#include<stdio.h>
#include<unistd.h>
#include<stdlib.h>

int main(int argc, char **argv)
{
  pid_t pid;
  int fib[argc];
  int i, size;
  size = strtol(argv[1], NULL, 0L);
  fib[0] = 0;
  fib[1] = 1;
  pid = fork();
  printf("size = %d \n", size);
  if(pid == 0){
    for(i = 2; i < size; i++){
      fib[i] = fib[i-1] + fib[i-2];
    }
    for(i = 0; i < size; i++){
      printf("\n\t %d ", fib[i]);
    }
  }
  else if(pid > 0){ // Parent, because pid > 0
    wait(NULL);
    printf("\n");
    exit(1);
  }
}

Answer 1

Some issues are:

1. fib[0] should be 1, not 0.
2. Size of fib array is wrong.
3. And array fib is defined wrong too.
4. Seems that for fill random membery, not fib array elements.