Struggling with Creating a Shell in C -

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I am struggling to apply a basic shell. I understand the basic concept and as far as a seg-fault I basically need to apply a shell:

  1. Prompt
  2. Parse input
  3. create argv []
  4. Kanka Kid - & gt; Execvp () Parent - & gt; Waiting / Waiting Period ()

    The code given below is given below and I can not understand what I am doing for my life. I have seen many other places. My initial idea is to do it with strtok (), but I could not despise it. 

      int main (int argc, char * argv []) {pid_t pid; Four inputs [100]; Four * p [20]; Int Newforg; Four * s; While (1) {printf ("simple shell"); Fgets (input, 100, stdin); S = Stroke (input, ""); While (P [numofargs]! = NULL) {P [numofargs] = strtok (NULL, ""); numofargs ++; } Pid = fork (); If (pd == 0) {execvp (p [0], p); Lie ("execution failed"); } And waitpad (); } Exit (0); }    
     
     
     Note that  p  is an array of pointers  Four . To begin this,  is undefined , which means every entry is  p [n]  (i.e. 20 elements of each  p  where 0 & lt; = N & lt; 20) Trash is still the first thing you do with it to see if its one object is  NULL  It is accidentally besides you, you have  numofargs , so which element of  p  are you accessing? Who knows. It's also a crashstick that's ok to start those things.

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