I get a segmentation fault on this code at a different line every time. C++ -

i writing genetic algorithm program. use linux (os), c++ (language) , g++ (compiler). following code generates seg fault. problem run 50+ times , times none. plus error occurs in of tmp[ k ][ p ] or tmp[ k + 1 ][ p ] assignment lines. missing here?

int** geneticalgorythm::newgeneration( int** parents ) {     int** tmp = new int*[ population ];     int p = 0;      for( int k = 0; k < population; k += 2 )     {         tmp[ k ] = new int[ ngenes ];         tmp[ k + 1 ] = new int[ ngenes ];         setlikelihood( parents );          int parent1 = getparent( likelyhood );         int parent2 = getparent( likelyhood );          while( parent1 == parent2 )         {             parent2 = getparent( likelyhood );         }          for( p = 0; p < crossoverpoint; p++ )         {             tmp[ k ][ p ] = parents[ parent1 ][ p ];             tmp[ k + 1 ][ p ] = parents[ parent2 ][ p ];         }          for( p = crossoverpoint; p < ngenes; p++ )         {             tmp[ k ][ p ] = parents[ parent2 ][ p ];             tmp[ k + 1 ][ p ] = parents[ parent1 ][ p ];         }     }      currgeneration++;     return tmp; }   int geneticalgorythm::getparent( double* lh ) {     int randval = rand( ) % 100;     int* choose = new int[ 100 ];     int counter = 0;      for( int k = 0; k < population; k++ )     {         for( int j = 0; j < (int)likelyhood[ k ]; j++ )         {             choose[ counter++ ] = j;         }     }      counter = choose[ randval ];     delete[] choose;     return counter; }  void geneticalgorythm::setlikelihood( int** pg ) {     multipleinverse = 0;     double 1 = 1.00;      for( int mi = 0; mi < population; mi++ )     {         multipleinverse  += one/checkfitness( pg[ mi ] );      }      for( int lh = 0; lh < population; lh++ )     {         likelyhood[ lh ] = round(((one/checkfitness( pg[ lh ] ))/multipleinverse) * 100);     }  } 

variable values: population = 20; ngenes = 3; crossoverpoint = 1;

likelihood how parent selected based on fitness level. pg parent genes. [ population ][ ngenes ].

thanks in advance.

looking @ values provided, looks indexing tmp ok. if lines you're seeing segfault

tmp[ k ][ p ] = parents[ parent1 ][ p ]; tmp[ k + 1 ][ p ] = parents[ parent2 ][ p ]; 

it have because of indexing parents [ parentn ][ p ]. dimensions of parents? getparent(…) guaranteed return valid index parents?