title: Floating point exception( core dump
body: <p>Program: So I made a program that take two numbers, N and L. N is the size of a 2D array and L is a number from 3 - 16. The program builds the array and starts at the center and works its way out in a counter clockwise spiral. I is the value of the center and its as you go through the array( in the spiral ) the value will increase by one. It it is prime, that number will be assigned to that spot and if not it <em>*</em> will take its place instead.</p>
  
  <p>Error: I'm getting a "Floating point exception " error, how would I solve this? </p>
  
  <p>Code:</p>
  
  <pre><code> void Array_Loop( int *Array, int n, int L ) ;
  
  int Is_Prime( int Number ) ;
  
  int main( int argc, char *argv[] ){
  
    int **Array ;
    int n, L ;
  
    n = atoi( argv[1] ) ;
    L = atoi( argv[2] ) ;
  
    Matrix_Build( &amp;Array, n, n ) ;
    Array_Loop( Array, n, L ) ;
  
  
    return 0 ;
  
  }
  
  void Array_Loop( int *Array, int n, int L ){
  
    int i, j, k, h ;
    int lctn, move;
  
    lctn = n / 2 + 1 ;
    i = lctn ;
    j = lctn ;
    move = 1
  
    while( i != 0 &amp;&amp; j != n ){
  
      for( j = lctn ; j &lt; lctn + move ; j++ ){
  
           if( L % 2 == 2) Array[i][j] = -1 ;
           else Array[i][j] = Is_Prime( L ) ;
           L++ ;
      }
  
      move = move * -1 ;
  
      for( i = i ; i &gt; lctn - move ; i-- ){
  
        if( L % 2 == 2) Array[i][j] = -1 ;
        else Array[i][j] = Is_Prime( L ) ;
        L++ ;
      }
  
      move-- ;
  
      for( j = j ; j &gt; lctn - move ; j-- ){
  
        if( L % 2 == 2) Array[i][j] = -1 ;
        else Array[i][j] = Is_Prime( L ) ;
        L++ ;
      }
  
      move = move * -1 ;
  
      for( i = i ; i &lt; lctn - move ; i-- ){
  
        if( L % 2 == 2) Array[i][j] = -1 ;
        else Array[i][j] = Is_Prime( L ) ;
        L++ ;
      }
  
      move++ ;
  
    }
  
  }
  
  
  int Is_Prime( int Number ){
  
    int i ;
  
    for( i = 0 ; i &lt; Number / 2 ; i++ ){
  
      if( Number % i != 0 ) return -1 ;
  
    }
  
    return Number ;
  
  }
  </code></pre>